122123230021 has 8 divisors (see below), whose sum is σ = 139253638104. Its totient is φ = 106098009600.

The previous prime is 122123230001. The next prime is 122123230039. The reversal of 122123230021 is 120032321221.

It can be written as a sum of positive squares in 4 ways, for example, as 49990699396 + 72132530625 = 223586^2 + 268575^2 .

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 122123230021 - 2⁵ = 122123229989 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 (122123230001) 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, 276296680 + ... + 276297121.

It is an arithmetic number, because the mean of its divisors is an integer number (17406704763).

Almost surely, 2^122123230021 is an apocalyptic number.

It is an amenable number.

122123230021 is a deficient number, since it is larger than the sum of its proper divisors (17130408083).

122123230021 is a wasteful number, since it uses less digits than its factorization.

122123230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552593831.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 122123230021 its reverse (120032321221), we get a palindrome (242155551242).

The spelling of 122123230021 in words is "one hundred twenty-two billion, one hundred twenty-three million, two hundred thirty thousand, twenty-one".