21123173036300 has 72 divisors (see below), whose sum is σ = 45975584061792. Its totient is φ = 8423785216000.

The previous prime is 21123173036237. The next prime is 21123173036327. The reversal of 21123173036300 is 363037132112.

It is a super-2 number, since 2×21123173036300² (a number of 27 digits) contains 22 as substring.

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, 202605185 + ... + 202709415.

It is an arithmetic number, because the mean of its divisors is an integer number (638549778636).

Almost surely, 2^{21123173036300} is an apocalyptic number.

21123173036300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21123173036300 is an abundant number, since it is smaller than the sum of its proper divisors (24852411025492).

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

21123173036300 is a wasteful number, since it uses less digits than its factorization.

21123173036300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110339 (or 110332 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 32.

The spelling of 21123173036300 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred seventy-three million, thirty-six thousand, three hundred".