29921892111 has 12 divisors (see below), whose sum is σ = 43446798720. Its totient is φ = 19843487520.

The previous prime is 29921892097. The next prime is 29921892157. The reversal of 29921892111 is 11129812992.

It is not a de Polignac number, because 29921892111 - 2⁵ = 29921892079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (29921892311) 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, 8701566 + ... + 8705003.

It is an arithmetic number, because the mean of its divisors is an integer number (3620566560).

Almost surely, 2^29921892111 is an apocalyptic number.

29921892111 is a deficient number, since it is larger than the sum of its proper divisors (13524906609).

29921892111 is a wasteful number, since it uses less digits than its factorization.

29921892111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17406766 (or 17406763 counting only the distinct ones).

The product of its digits is 46656, while the sum is 45.

The spelling of 29921892111 in words is "twenty-nine billion, nine hundred twenty-one million, eight hundred ninety-two thousand, one hundred eleven".