123229210921 has 8 divisors (see below), whose sum is σ = 130818668544. Its totient is φ = 115677606720.

The previous prime is 123229210873. The next prime is 123229210931. The reversal of 123229210921 is 129012922321.

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 123229210921 - 2¹⁵ = 123229178153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123229210931) 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, 9456645 + ... + 9469666.

It is an arithmetic number, because the mean of its divisors is an integer number (16352333568).

Almost surely, 2^123229210921 is an apocalyptic number.

It is an amenable number.

123229210921 is a deficient number, since it is larger than the sum of its proper divisors (7589457623).

123229210921 is a wasteful number, since it uses less digits than its factorization.

123229210921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18926711.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 123229210921 in words is "one hundred twenty-three billion, two hundred twenty-nine million, two hundred ten thousand, nine hundred twenty-one".