21332012994 has 24 divisors (see below), whose sum is σ = 48651960240. Its totient is φ = 6736425048.

The previous prime is 21332012993. The next prime is 21332013007. The reversal of 21332012994 is 49921023312.

It is a super-3 number, since 3×21332012994³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21332012993) 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, 31186812 + ... + 31187495.

It is an arithmetic number, because the mean of its divisors is an integer number (2027165010).

Almost surely, 2^21332012994 is an apocalyptic number.

21332012994 is an abundant number, since it is smaller than the sum of its proper divisors (27319947246).

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

21332012994 is a wasteful number, since it uses less digits than its factorization.

21332012994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62374334 (or 62374331 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The spelling of 21332012994 in words is "twenty-one billion, three hundred thirty-two million, twelve thousand, nine hundred ninety-four".