21233711246 has 16 divisors (see below), whose sum is σ = 36789960240. Its totient is φ = 9083940480.

The previous prime is 21233711227. The next prime is 21233711267. The reversal of 21233711246 is 64211733212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28386941 + ... + 28387688.

It is an arithmetic number, because the mean of its divisors is an integer number (2299372515).

Almost surely, 2^21233711246 is an apocalyptic number.

21233711246 is a deficient number, since it is larger than the sum of its proper divisors (15556248994).

21233711246 is a wasteful number, since it uses less digits than its factorization.

21233711246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56774659.

The product of its digits is 12096, while the sum is 32.

The spelling of 21233711246 in words is "twenty-one billion, two hundred thirty-three million, seven hundred eleven thousand, two hundred forty-six".