1011212131023 has 40 divisors (see below), whose sum is σ = 1514413929600. Its totient is φ = 672429891600.

The previous prime is 1011212130979. The next prime is 1011212131031. The reversal of 1011212131023 is 3201312121101.

It is not a de Polignac number, because 1011212131023 - 2²¹ = 1011210033871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1011212130987 and 1011212131005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011212331023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 153233878 + ... + 153240476.

It is an arithmetic number, because the mean of its divisors is an integer number (37860348240).

Almost surely, 2^{1011212131023} is an apocalyptic number.

1011212131023 is a deficient number, since it is larger than the sum of its proper divisors (503201798577).

1011212131023 is an equidigital number, since it uses as much as digits as its factorization.

1011212131023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11129 (or 11120 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1011212131023 its reverse (3201312121101), we get a palindrome (4212524252124).

The spelling of 1011212131023 in words is "one trillion, eleven billion, two hundred twelve million, one hundred thirty-one thousand, twenty-three".