1021331123131 has 8 divisors (see below), whose sum is σ = 1114187157504. Its totient is φ = 928476380520.

The previous prime is 1021331123117. The next prime is 1021331123143. The reversal of 1021331123131 is 1313211331201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1021331123131 - 2¹⁹ = 1021330598843 is a prime.

It is a super-2 number, since 2×1021331123131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021331123101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2160870 + ... + 2590756.

It is an arithmetic number, because the mean of its divisors is an integer number (139273394688).

Almost surely, 2^{1021331123131} is an apocalyptic number.

1021331123131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1021331123131 is a deficient number, since it is larger than the sum of its proper divisors (92856034373).

1021331123131 is a wasteful number, since it uses less digits than its factorization.

1021331123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645881.

The product of its (nonzero) digits is 324, while the sum is 22.

Adding to 1021331123131 its reverse (1313211331201), we get a palindrome (2334542454332).

The spelling of 1021331123131 in words is "one trillion, twenty-one billion, three hundred thirty-one million, one hundred twenty-three thousand, one hundred thirty-one".