971211212222212 has 96 divisors (see below), whose sum is σ = 1972786080835584. Its totient is φ = 414671259340800.

The previous prime is 971211212222161. The next prime is 971211212222239. The reversal of 971211212222212 is 212222212112179.

It is a happy number.

It is a super-2 number, since 2×971211212222212² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51009012 + ... + 67411732.

It is an arithmetic number, because the mean of its divisors is an integer number (20549855008704).

Almost surely, 2^{971211212222212} is an apocalyptic number.

971211212222212 is a gapful number since it is divisible by the number (92) formed by its first and last digit.

It is an amenable number.

971211212222212 is an abundant number, since it is smaller than the sum of its proper divisors (1001574868613372).

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

971211212222212 is a wasteful number, since it uses less digits than its factorization.

971211212222212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16404389 (or 16404387 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The spelling of 971211212222212 in words is "nine hundred seventy-one trillion, two hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twelve".