122112111021212 has 144 divisors (see below), whose sum is σ = 233508634087680. Its totient is φ = 55848011341824.

The previous prime is 122112111021191. The next prime is 122112111021221. The reversal of 122112111021212 is 212120111211221.

It is a happy number.

It is a super-2 number, since 2×122112111021212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 83695757339 + ... + 83695758797.

It is an arithmetic number, because the mean of its divisors is an integer number (1621587736720).

Almost surely, 2^{122112111021212} is an apocalyptic number.

It is an amenable number.

122112111021212 is a deficient number, since it is larger than the sum of its proper divisors (111396523066468).

122112111021212 is a wasteful number, since it uses less digits than its factorization.

122112111021212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 122112111021212 its reverse (212120111211221), we get a palindrome (334232222232433).

The spelling of 122112111021212 in words is "one hundred twenty-two trillion, one hundred twelve billion, one hundred eleven million, twenty-one thousand, two hundred twelve".