121122102222220 has 96 divisors (see below), whose sum is σ = 292190199840000. Its totient is φ = 41711091782400.

The previous prime is 121122102222217. The next prime is 121122102222223. The reversal of 121122102222220 is 22222201221121.

It is an interprime number because it is at equal distance from previous prime (121122102222217) and next prime (121122102222223).

It is a super-2 number, since 2×121122102222220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 121122102222191 and 121122102222200.

It is not an unprimeable number, because it can be changed into a prime (121122102222223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6220435 + ... + 16761205.

It is an arithmetic number, because the mean of its divisors is an integer number (3043647915000).

Almost surely, 2^{121122102222220} is an apocalyptic number.

121122102222220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121122102222220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146095099920000).

121122102222220 is an abundant number, since it is smaller than the sum of its proper divisors (171068097617780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121122102222220 is a wasteful number, since it uses less digits than its factorization.

121122102222220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10543559 (or 10543557 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 121122102222220 its reverse (22222201221121), we get a palindrome (143344303443341).

The spelling of 121122102222220 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty".