121202022110220 has 144 divisors (see below), whose sum is σ = 381338637388800. Its totient is φ = 32314098211776.

The previous prime is 121202022110201. The next prime is 121202022110251. The reversal of 121202022110220 is 22011220202121.

It is a happy number.

121202022110220 is a `hidden beast` number, since 1 + 21 + 202 + 0 + 221 + 1 + 0 + 220 = 666.

121202022110220 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121202022110193 and 121202022110202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21929331 + ... + 26894229.

Almost surely, 2^{121202022110220} is an apocalyptic number.

121202022110220 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 121202022110220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (190669318694400).

121202022110220 is an abundant number, since it is smaller than the sum of its proper divisors (260136615278580).

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

121202022110220 is a wasteful number, since it uses less digits than its factorization.

121202022110220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969946 (or 4969932 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121202022110220 its reverse (22011220202121), we get a palindrome (143213242312341).

The spelling of 121202022110220 in words is "one hundred twenty-one trillion, two hundred two billion, twenty-two million, one hundred ten thousand, two hundred twenty".