1021026305013 has 64 divisors (see below), whose sum is σ = 1647552614400. Its totient is φ = 554173804800.

The previous prime is 1021026304933. The next prime is 1021026305023. The reversal of 1021026305013 is 3105036201201.

It is not a de Polignac number, because 1021026305013 - 2¹³ = 1021026296821 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021026305023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2562868 + ... + 2934338.

It is an arithmetic number, because the mean of its divisors is an integer number (25743009600).

Almost surely, 2^{1021026305013} is an apocalyptic number.

1021026305013 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1021026305013 is a deficient number, since it is larger than the sum of its proper divisors (626526309387).

1021026305013 is a wasteful number, since it uses less digits than its factorization.

1021026305013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371690.

The product of its (nonzero) digits is 1080, while the sum is 24.

The spelling of 1021026305013 in words is "one trillion, twenty-one billion, twenty-six million, three hundred five thousand, thirteen".