122101212112 has 40 divisors (see below), whose sum is σ = 261612898560. Its totient is φ = 54740263680.

The previous prime is 122101212091. The next prime is 122101212113. The reversal of 122101212112 is 211212101221.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122101212113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4738912 + ... + 4764607.

It is an arithmetic number, because the mean of its divisors is an integer number (6540322464).

Almost surely, 2^122101212112 is an apocalyptic number.

It is an amenable number.

122101212112 is an abundant number, since it is smaller than the sum of its proper divisors (139511686448).

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

122101212112 is a wasteful number, since it uses less digits than its factorization.

122101212112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9503611 (or 9503605 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 122101212112 its reverse (211212101221), we get a palindrome (333313313333).

The spelling of 122101212112 in words is "one hundred twenty-two billion, one hundred one million, two hundred twelve thousand, one hundred twelve".