1021131033231 has 16 divisors (see below), whose sum is σ = 1411256770560. Its totient is φ = 655972998240.

The previous prime is 1021131033227. The next prime is 1021131033277. The reversal of 1021131033231 is 1323301311201.

It is a happy number.

It is not a de Polignac number, because 1021131033231 - 2² = 1021131033227 is a prime.

It is a super-2 number, since 2×1021131033231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1021131033198 and 1021131033207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021131033211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11623375 + ... + 11710896.

It is an arithmetic number, because the mean of its divisors is an integer number (88203548160).

Almost surely, 2^{1021131033231} is an apocalyptic number.

1021131033231 is a deficient number, since it is larger than the sum of its proper divisors (390125737329).

1021131033231 is a wasteful number, since it uses less digits than its factorization.

1021131033231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23334806.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1021131033231 its reverse (1323301311201), we get a palindrome (2344432344432).

The spelling of 1021131033231 in words is "one trillion, twenty-one billion, one hundred thirty-one million, thirty-three thousand, two hundred thirty-one".