1021023123013 has 16 divisors (see below), whose sum is σ = 1081525072320. Its totient is φ = 962238461184.

The previous prime is 1021023123007. The next prime is 1021023123023. The reversal of 1021023123013 is 3103213201201.

It is a cyclic number.

It is not a de Polignac number, because 1021023123013 - 2²⁵ = 1020989568581 is a prime.

It is a super-3 number, since 3×1021023123013³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021023123023) 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 15 ways as a sum of consecutive naturals, for example, 1573245 + ... + 2125357.

It is an arithmetic number, because the mean of its divisors is an integer number (67595317020).

Almost surely, 2^{1021023123013} is an apocalyptic number.

It is an amenable number.

1021023123013 is a deficient number, since it is larger than the sum of its proper divisors (60501949307).

1021023123013 is a wasteful number, since it uses less digits than its factorization.

1021023123013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553668.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1021023123013 its reverse (3103213201201), we get a palindrome (4124236324214).

The spelling of 1021023123013 in words is "one trillion, twenty-one billion, twenty-three million, one hundred twenty-three thousand, thirteen".