21246277230 has 24 divisors (see below), whose sum is σ = 55240321032. Its totient is φ = 5665673904.

The previous prime is 21246277229. The next prime is 21246277243. The reversal of 21246277230 is 3277264212.

It is a happy number.

21246277230 is a `hidden beast` number, since 2 + 1 + 2 + 4 + 627 + 7 + 23 + 0 = 666.

It is a super-2 number, since 2×21246277230² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118034784 + ... + 118034963.

It is an arithmetic number, because the mean of its divisors is an integer number (2301680043).

Almost surely, 2^21246277230 is an apocalyptic number.

21246277230 is an abundant number, since it is smaller than the sum of its proper divisors (33994043802).

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

21246277230 is a wasteful number, since it uses less digits than its factorization.

21246277230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236069760 (or 236069757 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The spelling of 21246277230 in words is "twenty-one billion, two hundred forty-six million, two hundred seventy-seven thousand, two hundred thirty".