21160220334 has 24 divisors (see below), whose sum is σ = 46517510760. Its totient is φ = 6412187760.

The previous prime is 21160220327. The next prime is 21160220369. The reversal of 21160220334 is 43302206112.

21160220334 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14572429 + ... + 14573880.

It is an arithmetic number, because the mean of its divisors is an integer number (1938229615).

Almost surely, 2^21160220334 is an apocalyptic number.

21160220334 is an abundant number, since it is smaller than the sum of its proper divisors (25357290426).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21160220334 is a wasteful number, since it uses less digits than its factorization.

21160220334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29146336 (or 29146325 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21160220334 its reverse (43302206112), we get a palindrome (64462426446).

The spelling of 21160220334 in words is "twenty-one billion, one hundred sixty million, two hundred twenty thousand, three hundred thirty-four".