21004414312122 has 72 divisors (see below), whose sum is σ = 48347082044352. Its totient is φ = 6589209628800.

The previous prime is 21004414312117. The next prime is 21004414312153. The reversal of 21004414312122 is 22121341440012.

21004414312122 is a `hidden beast` number, since 2 + 1 + 0 + 0 + 4 + 414 + 31 + 212 + 2 = 666.

It is a super-2 number, since 2×21004414312122² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 89518497 + ... + 89752827.

It is an arithmetic number, because the mean of its divisors is an integer number (671487250616).

Almost surely, 2^{21004414312122} is an apocalyptic number.

21004414312122 is an abundant number, since it is smaller than the sum of its proper divisors (27342667732230).

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

21004414312122 is a wasteful number, since it uses less digits than its factorization.

21004414312122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251604 (or 251584 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 21004414312122 its reverse (22121341440012), we get a palindrome (43125755752134).

The spelling of 21004414312122 in words is "twenty-one trillion, four billion, four hundred fourteen million, three hundred twelve thousand, one hundred twenty-two".