123210222000121 has 2 divisors, whose sum is σ = 123210222000122. Its totient is φ = 123210222000120.

The previous prime is 123210222000113. The next prime is 123210222000143. The reversal of 123210222000121 is 121000222012321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118841306862096 + 4368915138025 = 10901436^2 + 2090195^2 .

It is a cyclic number.

It is not a de Polignac number, because 123210222000121 - 2³ = 123210222000113 is a prime.

It is not a weakly prime, because it can be changed into another prime (123210222006121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605111000060 + 61605111000061.

It is an arithmetic number, because the mean of its divisors is an integer number (61605111000061).

Almost surely, 2^{123210222000121} is an apocalyptic number.

It is an amenable number.

123210222000121 is a deficient number, since it is larger than the sum of its proper divisors (1).

123210222000121 is an equidigital number, since it uses as much as digits as its factorization.

123210222000121 is an evil number, because the sum of its binary digits is even.

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

Adding to 123210222000121 its reverse (121000222012321), we get a palindrome (244210444012442).

The spelling of 123210222000121 in words is "one hundred twenty-three trillion, two hundred ten billion, two hundred twenty-two million, one hundred twenty-one", and thus it is an aban number.