123202313120021 has 16 divisors (see below), whose sum is σ = 131671424047104. Its totient is φ = 114869016105984.

The previous prime is 123202313120011. The next prime is 123202313120083. The reversal of 123202313120021 is 120021313202321.

It is a cyclic number.

It is not a de Polignac number, because 123202313120021 - 2¹⁴ = 123202313103637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123202313120011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89160236 + ... + 90531498.

It is an arithmetic number, because the mean of its divisors is an integer number (8229464002944).

Almost surely, 2^{123202313120021} is an apocalyptic number.

It is an amenable number.

123202313120021 is a deficient number, since it is larger than the sum of its proper divisors (8469110927083).

123202313120021 is a wasteful number, since it uses less digits than its factorization.

123202313120021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420780.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 123202313120021 its reverse (120021313202321), we get a palindrome (243223626322342).

The spelling of 123202313120021 in words is "one hundred twenty-three trillion, two hundred two billion, three hundred thirteen million, one hundred twenty thousand, twenty-one".