122111122212012 has 48 divisors (see below), whose sum is σ = 294124665139200. Its totient is φ = 39389672945280.

The previous prime is 122111122212011. The next prime is 122111122212049. The reversal of 122111122212012 is 210212221111221.

It is a super-2 number, since 2×122111122212012² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122111122212012.

It is not an unprimeable number, because it can be changed into a prime (122111122212011) 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, 10356664 + ... + 18747872.

It is an arithmetic number, because the mean of its divisors is an integer number (6127597190400).

Almost surely, 2^{122111122212012} is an apocalyptic number.

122111122212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

122111122212012 is an abundant number, since it is smaller than the sum of its proper divisors (172013542927188).

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

122111122212012 is a wasteful number, since it uses less digits than its factorization.

122111122212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8430366 (or 8430364 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122111122212012 its reverse (210212221111221), we get a palindrome (332323343323233).

The spelling of 122111122212012 in words is "one hundred twenty-two trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twelve thousand, twelve".