123011202137 has 2 divisors, whose sum is σ = 123011202138. Its totient is φ = 123011202136.

The previous prime is 123011202107. The next prime is 123011202157. The reversal of 123011202137 is 731202110321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80168825881 + 42842376256 = 283141^2 + 206984^2 .

It is a cyclic number.

It is not a de Polignac number, because 123011202137 - 2¹⁴ = 123011185753 is a prime.

It is not a weakly prime, because it can be changed into another prime (123011202107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61505601068 + 61505601069.

It is an arithmetic number, because the mean of its divisors is an integer number (61505601069).

Almost surely, 2^123011202137 is an apocalyptic number.

It is an amenable number.

123011202137 is a deficient number, since it is larger than the sum of its proper divisors (1).

123011202137 is an equidigital number, since it uses as much as digits as its factorization.

123011202137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 23.

Adding to 123011202137 its reverse (731202110321), we get a palindrome (854213312458).

The spelling of 123011202137 in words is "one hundred twenty-three billion, eleven million, two hundred two thousand, one hundred thirty-seven".