122221222121212 has 12 divisors (see below), whose sum is σ = 214203072452040. Its totient is φ = 61020344277776.

The previous prime is 122221222121203. The next prime is 122221222121221. The reversal of 122221222121212 is 212121222122221.

It is an interprime number because it is at equal distance from previous prime (122221222121203) and next prime (122221222121221).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22566692662 + ... + 22566698077.

It is an arithmetic number, because the mean of its divisors is an integer number (17850256037670).

Almost surely, 2^{122221222121212} is an apocalyptic number.

It is an amenable number.

122221222121212 is a deficient number, since it is larger than the sum of its proper divisors (91981850330828).

122221222121212 is a wasteful number, since it uses less digits than its factorization.

122221222121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45133391420 (or 45133391418 counting only the distinct ones).

The product of its digits is 1024, while the sum is 25.

Adding to 122221222121212 its reverse (212121222122221), we get a palindrome (334342444243433).

The spelling of 122221222121212 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twelve".