122112110111212 has 48 divisors (see below), whose sum is σ = 250600030581600. Its totient is φ = 51552006266880.

The previous prime is 122112110111209. The next prime is 122112110111219. The reversal of 122112110111212 is 212111011211221.

It is a super-2 number, since 2×122112110111212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 122112110111212.

It is not an unprimeable number, because it can be changed into a prime (122112110111219) 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, 2130923989 + ... + 2130981292.

It is an arithmetic number, because the mean of its divisors is an integer number (5220833970450).

Almost surely, 2^{122112110111212} is an apocalyptic number.

It is an amenable number.

122112110111212 is an abundant number, since it is smaller than the sum of its proper divisors (128487920470388).

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

122112110111212 is a wasteful number, since it uses less digits than its factorization.

122112110111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4261905346 (or 4261905344 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 122112110111212 its reverse (212111011211221), we get a palindrome (334223121322433).

The spelling of 122112110111212 in words is "one hundred twenty-two trillion, one hundred twelve billion, one hundred ten million, one hundred eleven thousand, two hundred twelve".