12221021131000 has 64 divisors (see below), whose sum is σ = 31196933969760. Its totient is φ = 4444007680000.

The previous prime is 12221021130979. The next prime is 12221021131001. The reversal of 12221021131000 is 13112012221.

It is a super-2 number, since 2×12221021131000² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221021131001) 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, 555489961 + ... + 555511960.

Almost surely, 2^{12221021131000} is an apocalyptic number.

12221021131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12221021131000 is an abundant number, since it is smaller than the sum of its proper divisors (18975912838760).

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

12221021131000 is a wasteful number, since it uses less digits than its factorization.

12221021131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111001953 (or 1111001939 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 12221021131000 its reverse (13112012221), we get a palindrome (12234133143221).

The spelling of 12221021131000 in words is "twelve trillion, two hundred twenty-one billion, twenty-one million, one hundred thirty-one thousand".