1021021303131 has 6 divisors (see below), whose sum is σ = 1474808548980. Its totient is φ = 680680868748.

The previous prime is 1021021303129. The next prime is 1021021303151. The reversal of 1021021303131 is 1313031201201.

1021021303131 is a `hidden beast` number, since 1 + 0 + 210 + 21 + 303 + 131 = 666.

It is not a de Polignac number, because 1021021303131 - 2¹ = 1021021303129 is a prime.

It is a super-2 number, since 2×1021021303131² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1021021303151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 56723405721 + ... + 56723405738.

It is an arithmetic number, because the mean of its divisors is an integer number (245801424830).

Almost surely, 2^{1021021303131} is an apocalyptic number.

1021021303131 is a deficient number, since it is larger than the sum of its proper divisors (453787245849).

1021021303131 is a wasteful number, since it uses less digits than its factorization.

1021021303131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113446811465 (or 113446811462 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1021021303131 its reverse (1313031201201), we get a palindrome (2334052504332).

The spelling of 1021021303131 in words is "one trillion, twenty-one billion, twenty-one million, three hundred three thousand, one hundred thirty-one".