21833338385012 has 72 divisors (see below), whose sum is σ = 48488334820128. Its totient is φ = 8506265544000.

The previous prime is 21833338385009. The next prime is 21833338385071. The reversal of 21833338385012 is 21058383333812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94966943 + ... + 95196569.

It is an arithmetic number, because the mean of its divisors is an integer number (673449094724).

Almost surely, 2^{21833338385012} is an apocalyptic number.

21833338385012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21833338385012 is an abundant number, since it is smaller than the sum of its proper divisors (26654996435116).

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

21833338385012 is a wasteful number, since it uses less digits than its factorization.

21833338385012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273757 (or 273748 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 50.

The spelling of 21833338385012 in words is "twenty-one trillion, eight hundred thirty-three billion, three hundred thirty-eight million, three hundred eighty-five thousand, twelve".