21251532114 has 40 divisors (see below), whose sum is σ = 49155287808. Its totient is φ = 6855331320.

The previous prime is 21251532101. The next prime is 21251532139. The reversal of 21251532114 is 41123515212.

It is a happy number.

21251532114 is a `hidden beast` number, since 2 + 1 + 2 + 515 + 32 + 114 = 666.

21251532114 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×21251532114³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2110822 + ... + 2120865.

Almost surely, 2^21251532114 is an apocalyptic number.

21251532114 is an abundant number, since it is smaller than the sum of its proper divisors (27903755694).

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

21251532114 is a wasteful number, since it uses less digits than its factorization.

21251532114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4231732 (or 4231723 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The spelling of 21251532114 in words is "twenty-one billion, two hundred fifty-one million, five hundred thirty-two thousand, one hundred fourteen".