123036022121 has 2 divisors, whose sum is σ = 123036022122. Its totient is φ = 123036022120.

The previous prime is 123036022091. The next prime is 123036022243. The reversal of 123036022121 is 121220630321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115477632400 + 7558389721 = 339820^2 + 86939^2 .

It is a cyclic number.

It is not a de Polignac number, because 123036022121 - 2²² = 123031827817 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (123036022321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61518011060 + 61518011061.

It is an arithmetic number, because the mean of its divisors is an integer number (61518011061).

Almost surely, 2^123036022121 is an apocalyptic number.

It is an amenable number.

123036022121 is a deficient number, since it is larger than the sum of its proper divisors (1).

123036022121 is an equidigital number, since it uses as much as digits as its factorization.

123036022121 is an evil number, because the sum of its binary digits is even.

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

Adding to 123036022121 its reverse (121220630321), we get a palindrome (244256652442).

The spelling of 123036022121 in words is "one hundred twenty-three billion, thirty-six million, twenty-two thousand, one hundred twenty-one".