1021021131000 has 128 divisors (see below), whose sum is σ = 3430631131200. Its totient is φ = 251328268800.

The previous prime is 1021021130981. The next prime is 1021021131017. The reversal of 1021021131000 is 1311201201.

It is a super-2 number, since 2×1021021131000² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13051015 + ... + 13129014.

Almost surely, 2^{1021021131000} is an apocalyptic number.

1021021131000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1021021131000 is an abundant number, since it is smaller than the sum of its proper divisors (2409610000200).

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

1021021131000 is a wasteful number, since it uses less digits than its factorization.

1021021131000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26180066 (or 26180052 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 1021021131000 its reverse (1311201201), we get a palindrome (1022332332201).

The spelling of 1021021131000 in words is "one trillion, twenty-one billion, twenty-one million, one hundred thirty-one thousand".