122021022211220 has 96 divisors (see below), whose sum is σ = 281470805231616. Its totient is φ = 44065143286400.

The previous prime is 122021022211199. The next prime is 122021022211273. The reversal of 122021022211220 is 22112220120221.

It is a super-2 number, since 2×122021022211220² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 122021022211192 and 122021022211201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38561249 + ... + 41605431.

It is an arithmetic number, because the mean of its divisors is an integer number (2931987554496).

Almost surely, 2^{122021022211220} is an apocalyptic number.

122021022211220 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 122021022211220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (140735402615808).

122021022211220 is an abundant number, since it is smaller than the sum of its proper divisors (159449783020396).

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

122021022211220 is a wasteful number, since it uses less digits than its factorization.

122021022211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3045461 (or 3045459 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 122021022211220 its reverse (22112220120221), we get a palindrome (144133242331441).

The spelling of 122021022211220 in words is "one hundred twenty-two trillion, twenty-one billion, twenty-two million, two hundred eleven thousand, two hundred twenty".