21464522211 has 16 divisors (see below), whose sum is σ = 31224660480. Its totient is φ = 13007327520.

The previous prime is 21464522207. The next prime is 21464522293. The reversal of 21464522211 is 11222546412.

It is not a de Polignac number, because 21464522211 - 2² = 21464522207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21464522111) 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, 306630 + ... + 370068.

It is an arithmetic number, because the mean of its divisors is an integer number (1951541280).

Almost surely, 2^21464522211 is an apocalyptic number.

21464522211 is a deficient number, since it is larger than the sum of its proper divisors (9760138269).

21464522211 is a wasteful number, since it uses less digits than its factorization.

21464522211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73706.

The product of its digits is 7680, while the sum is 30.

The spelling of 21464522211 in words is "twenty-one billion, four hundred sixty-four million, five hundred twenty-two thousand, two hundred eleven".