1021125505413 has 16 divisors (see below), whose sum is σ = 1468600239680. Its totient is φ = 627369750144.

The previous prime is 1021125505391. The next prime is 1021125505457. The reversal of 1021125505413 is 3145055211201.

It is not a de Polignac number, because 1021125505413 - 2⁵ = 1021125505381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021125505493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21125056 + ... + 21173337.

It is an arithmetic number, because the mean of its divisors is an integer number (91787514980).

Almost surely, 2^{1021125505413} is an apocalyptic number.

1021125505413 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1021125505413 is a deficient number, since it is larger than the sum of its proper divisors (447474734267).

1021125505413 is a wasteful number, since it uses less digits than its factorization.

1021125505413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42299028.

The product of its (nonzero) digits is 6000, while the sum is 30.

The spelling of 1021125505413 in words is "one trillion, twenty-one billion, one hundred twenty-five million, five hundred five thousand, four hundred thirteen".