21132404214 has 32 divisors (see below), whose sum is σ = 42515020800. Its totient is φ = 7002496512.

The previous prime is 21132404207. The next prime is 21132404231. The reversal of 21132404214 is 41240423112.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1445827 + ... + 1460369.

It is an arithmetic number, because the mean of its divisors is an integer number (1328594400).

Almost surely, 2^21132404214 is an apocalyptic number.

21132404214 is an abundant number, since it is smaller than the sum of its proper divisors (21382616586).

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

21132404214 is a wasteful number, since it uses less digits than its factorization.

21132404214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15964.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21132404214 its reverse (41240423112), we get a palindrome (62372827326).

The spelling of 21132404214 in words is "twenty-one billion, one hundred thirty-two million, four hundred four thousand, two hundred fourteen".