12311021202000 has 80 divisors (see below), whose sum is σ = 39690732374592. Its totient is φ = 3282938985600.

The previous prime is 12311021201977. The next prime is 12311021202001. The reversal of 12311021202000 is 20212011321.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×12311021202000² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12311021202001) 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, 1025912434 + ... + 1025924433.

Almost surely, 2^{12311021202000} is an apocalyptic number.

12311021202000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12311021202000 is an abundant number, since it is smaller than the sum of its proper divisors (27379711172592).

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

12311021202000 is a wasteful number, since it uses less digits than its factorization.

12311021202000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051836893 (or 2051836877 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 12311021202000 its reverse (20212011321), we get a palindrome (12331233213321).

The spelling of 12311021202000 in words is "twelve trillion, three hundred eleven billion, twenty-one million, two hundred two thousand".