5123556001021 has 8 divisors (see below), whose sum is σ = 5393329444800. Its totient is φ = 4853793817440.

The previous prime is 5123556000971. The next prime is 5123556001061. The reversal of 5123556001021 is 1201006553215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5123556001021 - 2¹¹ = 5123555998973 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 (5123556001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1872976 + ... + 3708793.

It is an arithmetic number, because the mean of its divisors is an integer number (674166180600).

Almost surely, 2^{5123556001021} is an apocalyptic number.

It is an amenable number.

5123556001021 is a deficient number, since it is larger than the sum of its proper divisors (269773443779).

5123556001021 is a wasteful number, since it uses less digits than its factorization.

5123556001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5630099.

The product of its (nonzero) digits is 9000, while the sum is 31.

The spelling of 5123556001021 in words is "five trillion, one hundred twenty-three billion, five hundred fifty-six million, one thousand, twenty-one".