202021000123 has 8 divisors (see below), whose sum is σ = 212825619920. Its totient is φ = 191233573920.

The previous prime is 202021000117. The next prime is 202021000141. The reversal of 202021000123 is 321000120202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202021000123 - 2²⁵ = 201987445691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202021000163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4274268 + ... + 4321273.

It is an arithmetic number, because the mean of its divisors is an integer number (26603202490).

Almost surely, 2^202021000123 is an apocalyptic number.

202021000123 is a deficient number, since it is larger than the sum of its proper divisors (10804619797).

202021000123 is a wasteful number, since it uses less digits than its factorization.

202021000123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8596797.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 202021000123 its reverse (321000120202), we get a palindrome (523021120325).

The spelling of 202021000123 in words is "two hundred two billion, twenty-one million, one hundred twenty-three", and thus it is an aban number.