11874070021 has 16 divisors (see below), whose sum is σ = 13334061888. Its totient is φ = 10481702400.

The previous prime is 11874070001. The next prime is 11874070031. The reversal of 11874070021 is 12007047811.

It is a cyclic number.

It is not a de Polignac number, because 11874070021 - 2²¹ = 11871972869 is a prime.

It is a super-2 number, since 2×11874070021² (a number of 21 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 (11874070001) 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, 48435 + ... + 161536.

It is an arithmetic number, because the mean of its divisors is an integer number (833378868).

Almost surely, 2^11874070021 is an apocalyptic number.

11874070021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11874070021 is a deficient number, since it is larger than the sum of its proper divisors (1459991867).

11874070021 is a wasteful number, since it uses less digits than its factorization.

11874070021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210132.

The product of its (nonzero) digits is 3136, while the sum is 31.

The spelling of 11874070021 in words is "eleven billion, eight hundred seventy-four million, seventy thousand, twenty-one".