21929301313911 has 12 divisors (see below), whose sum is σ = 32194930527240. Its totient is φ = 14379869713680.

The previous prime is 21929301313891. The next prime is 21929301313963. The reversal of 21929301313911 is 11931310392912.

21929301313911 is a `hidden beast` number, since 2 + 1 + 9 + 29 + 301 + 313 + 9 + 1 + 1 = 666.

It is not a de Polignac number, because 21929301313911 - 2⁵ = 21929301313879 is a prime.

It is a super-2 number, since 2×21929301313911² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21929301303911) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19972040721 + ... + 19972041818.

It is an arithmetic number, because the mean of its divisors is an integer number (2682910877270).

Almost surely, 2^{21929301313911} is an apocalyptic number.

21929301313911 is a deficient number, since it is larger than the sum of its proper divisors (10265629213329).

21929301313911 is a wasteful number, since it uses less digits than its factorization.

21929301313911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39944082606 (or 39944082603 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 45.

The spelling of 21929301313911 in words is "twenty-one trillion, nine hundred twenty-nine billion, three hundred one million, three hundred thirteen thousand, nine hundred eleven".