21214134402 has 16 divisors (see below), whose sum is σ = 42444233280. Its totient is φ = 7068717392.

The previous prime is 21214134379. The next prime is 21214134451. The reversal of 21214134402 is 20443141212.

It is a super-2 number, since 2×21214134402² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647877 + ... + 679832.

It is an arithmetic number, because the mean of its divisors is an integer number (2652764580).

Almost surely, 2^21214134402 is an apocalyptic number.

21214134402 is an abundant number, since it is smaller than the sum of its proper divisors (21230098878).

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

21214134402 is a wasteful number, since it uses less digits than its factorization.

21214134402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330377.

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

Adding to 21214134402 its reverse (20443141212), we get a palindrome (41657275614).

The spelling of 21214134402 in words is "twenty-one billion, two hundred fourteen million, one hundred thirty-four thousand, four hundred two".