122021111112 has 64 divisors (see below), whose sum is σ = 309748561920. Its totient is φ = 40052155968.

The previous prime is 122021111111. The next prime is 122021111119. The reversal of 122021111112 is 211111120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122021111091 and 122021111100.

It is not an unprimeable number, because it can be changed into a prime (122021111111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286593 + ... + 571119.

It is an arithmetic number, because the mean of its divisors is an integer number (4839821280).

Almost surely, 2^122021111112 is an apocalyptic number.

122021111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122021111112 is an abundant number, since it is smaller than the sum of its proper divisors (187727450808).

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

122021111112 is a wasteful number, since it uses less digits than its factorization.

122021111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284810 (or 284806 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 122021111112 its reverse (211111120221), we get a palindrome (333132231333).

The spelling of 122021111112 in words is "one hundred twenty-two billion, twenty-one million, one hundred eleven thousand, one hundred twelve".