9971288011212 has 48 divisors (see below), whose sum is σ = 26256683174400. Its totient is φ = 2917409239360.

The previous prime is 9971288011193. The next prime is 9971288011213. The reversal of 9971288011212 is 2121108821799.

It is a super-3 number, since 3×9971288011212³ (a number of 40 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (9971288011213) 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, 1302411012 + ... + 1302418667.

It is an arithmetic number, because the mean of its divisors is an integer number (547014232800).

Almost surely, 2^{9971288011212} is an apocalyptic number.

It is an amenable number.

9971288011212 is an abundant number, since it is smaller than the sum of its proper divisors (16285395163188).

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

9971288011212 is a wasteful number, since it uses less digits than its factorization.

9971288011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2604829726 (or 2604829724 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 51.

The spelling of 9971288011212 in words is "nine trillion, nine hundred seventy-one billion, two hundred eighty-eight million, eleven thousand, two hundred twelve".