21233010309 has 12 divisors (see below), whose sum is σ = 32932832544. Its totient is φ = 12133148664.

The previous prime is 21233010289. The next prime is 21233010313. The reversal of 21233010309 is 90301033212.

It is not a de Polignac number, because 21233010309 - 2⁷ = 21233010181 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21233010209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72220977 + ... + 72221270.

It is an arithmetic number, because the mean of its divisors is an integer number (2744402712).

Almost surely, 2^21233010309 is an apocalyptic number.

It is an amenable number.

21233010309 is a deficient number, since it is larger than the sum of its proper divisors (11699822235).

21233010309 is a wasteful number, since it uses less digits than its factorization.

21233010309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144442264 (or 144442257 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 24.

The spelling of 21233010309 in words is "twenty-one billion, two hundred thirty-three million, ten thousand, three hundred nine".