21111425514 has 48 divisors (see below), whose sum is σ = 46345250952. Its totient is φ = 6944661504.

The previous prime is 21111425459. The next prime is 21111425551. The reversal of 21111425514 is 41552411112.

21111425514 is a `hidden beast` number, since 2 + 1 + 1 + 1 + 142 + 5 + 514 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13769849025 + 7341576489 = 117345^2 + 85683^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 599212 + ... + 633464.

Almost surely, 2^21111425514 is an apocalyptic number.

21111425514 is an abundant number, since it is smaller than the sum of its proper divisors (25233825438).

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

21111425514 is a wasteful number, since it uses less digits than its factorization.

21111425514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34711 (or 34708 counting only the distinct ones).

The product of its digits is 1600, while the sum is 27.

Adding to 21111425514 its reverse (41552411112), we get a palindrome (62663836626).

The spelling of 21111425514 in words is "twenty-one billion, one hundred eleven million, four hundred twenty-five thousand, five hundred fourteen".