10515003100021 has 16 divisors (see below), whose sum is σ = 12547171713024. Its totient is φ = 8615812108464.

The previous prime is 10515003100013. The next prime is 10515003100031. The reversal of 10515003100021 is 12000130051501.

It is a cyclic number.

It is not a de Polignac number, because 10515003100021 - 2³ = 10515003100013 is a prime.

It is a super-2 number, since 2×10515003100021² (a number of 27 digits) contains 22 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 (10515003100031) 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, 19368631 + ... + 19904116.

It is an arithmetic number, because the mean of its divisors is an integer number (784198232064).

Almost surely, 2^{10515003100021} is an apocalyptic number.

It is an amenable number.

10515003100021 is a deficient number, since it is larger than the sum of its proper divisors (2032168613003).

10515003100021 is a wasteful number, since it uses less digits than its factorization.

10515003100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39274440.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 10515003100021 its reverse (12000130051501), we get a palindrome (22515133151522).

It can be divided in two parts, 1051500 and 3100021, that added together give a triangular number (4151521 = T₂₈₈₁).

The spelling of 10515003100021 in words is "ten trillion, five hundred fifteen billion, three million, one hundred thousand, twenty-one".