1021012011031 has 2 divisors, whose sum is σ = 1021012011032. Its totient is φ = 1021012011030.

The previous prime is 1021012011007. The next prime is 1021012011049. The reversal of 1021012011031 is 1301102101201.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1021012011031 - 2⁵ = 1021012010999 is a prime.

It is a super-2 number, since 2×1021012011031² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1021012018031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 510506005515 + 510506005516.

It is an arithmetic number, because the mean of its divisors is an integer number (510506005516).

Almost surely, 2^{1021012011031} is an apocalyptic number.

1021012011031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1021012011031 is an equidigital number, since it uses as much as digits as its factorization.

1021012011031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 1021012011031 its reverse (1301102101201), we get a palindrome (2322114112232).

The spelling of 1021012011031 in words is "one trillion, twenty-one billion, twelve million, eleven thousand, thirty-one".