21000023232293 has 16 divisors (see below), whose sum is σ = 25523631073920. Its totient is φ = 16876849913856.

The previous prime is 21000023232289. The next prime is 21000023232299. The reversal of 21000023232293 is 39223232000012.

It is a happy number.

It is not a de Polignac number, because 21000023232293 - 2² = 21000023232289 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21000023232299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 813878396 + ... + 813904197.

It is an arithmetic number, because the mean of its divisors is an integer number (1595226942120).

Almost surely, 2^{21000023232293} is an apocalyptic number.

It is an amenable number.

21000023232293 is a deficient number, since it is larger than the sum of its proper divisors (4523607841627).

21000023232293 is a wasteful number, since it uses less digits than its factorization.

21000023232293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627782716.

The product of its (nonzero) digits is 7776, while the sum is 29.

The spelling of 21000023232293 in words is "twenty-one trillion, twenty-three million, two hundred thirty-two thousand, two hundred ninety-three".