122011111021 has 32 divisors (see below), whose sum is σ = 128012451840. Its totient is φ = 116162121600.

The previous prime is 122011110989. The next prime is 122011111051. The reversal of 122011111021 is 120111110221.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 122011111021 - 2⁵ = 122011110989 is a prime.

It is a super-2 number, since 2×122011111021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122011110992 and 122011111010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122011111051) 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, 339863640 + ... + 339863998.

It is an arithmetic number, because the mean of its divisors is an integer number (4000389120).

Almost surely, 2^122011111021 is an apocalyptic number.

It is an amenable number.

122011111021 is a deficient number, since it is larger than the sum of its proper divisors (6001340819).

122011111021 is a wasteful number, since it uses less digits than its factorization.

122011111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 122011111021 its reverse (120111110221), we get a palindrome (242122221242).

It can be divided in two parts, 1 and 22011111021, that added together give a palindrome (22011111022).

The spelling of 122011111021 in words is "one hundred twenty-two billion, eleven million, one hundred eleven thousand, twenty-one".