21061266232 has 32 divisors (see below), whose sum is σ = 39935160720. Its totient is φ = 10412098560.

The previous prime is 21061266229. The next prime is 21061266241. The reversal of 21061266232 is 23266216012.

It is a junction number, because it is equal to n+sod(n) for n = 21061266194 and 21061266203.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 834178 + ... + 859054.

Almost surely, 2^21061266232 is an apocalyptic number.

It is an amenable number.

21061266232 is a deficient number, since it is larger than the sum of its proper divisors (18873894488).

21061266232 is a wasteful number, since it uses less digits than its factorization.

21061266232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26071 (or 26067 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The spelling of 21061266232 in words is "twenty-one billion, sixty-one million, two hundred sixty-six thousand, two hundred thirty-two".