123122004100021 has 32 divisors (see below), whose sum is σ = 135194147262720. Its totient is φ = 111647709213696.

The previous prime is 123122004099979. The next prime is 123122004100079. The reversal of 123122004100021 is 120001400221321.

It is not a de Polignac number, because 123122004100021 - 2¹³ = 123122004091829 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 (123122004100621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2160423595 + ... + 2160480583.

It is an arithmetic number, because the mean of its divisors is an integer number (4224817101960).

Almost surely, 2^{123122004100021} is an apocalyptic number.

It is an amenable number.

123122004100021 is a deficient number, since it is larger than the sum of its proper divisors (12072143162699).

123122004100021 is a wasteful number, since it uses less digits than its factorization.

123122004100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90493.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 123122004100021 its reverse (120001400221321), we get a palindrome (243123404321342).

The spelling of 123122004100021 in words is "one hundred twenty-three trillion, one hundred twenty-two billion, four million, one hundred thousand, twenty-one".