200021211120123 has 128 divisors (see below), whose sum is σ = 323087478067200. Its totient is φ = 121880505309696.

The previous prime is 200021211119987. The next prime is 200021211120173. The reversal of 200021211120123 is 321021112120002.

200021211120123 is a `hidden beast` number, since 200 + 0 + 212 + 11 + 120 + 123 = 666.

It is not a de Polignac number, because 200021211120123 - 2¹⁷ = 200021210989051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200021211120096 and 200021211120105.

It is not an unprimeable number, because it can be changed into a prime (200021211120173) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 14678294436 + ... + 14678308062.

It is an arithmetic number, because the mean of its divisors is an integer number (2524120922400).

Almost surely, 2^{200021211120123} is an apocalyptic number.

200021211120123 is a deficient number, since it is larger than the sum of its proper divisors (123066266947077).

200021211120123 is a wasteful number, since it uses less digits than its factorization.

200021211120123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21798 (or 21792 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 200021211120123 its reverse (321021112120002), we get a palindrome (521042323240125).

The spelling of 200021211120123 in words is "two hundred trillion, twenty-one billion, two hundred eleven million, one hundred twenty thousand, one hundred twenty-three".