122212400137 has 2 divisors, whose sum is σ = 122212400138. Its totient is φ = 122212400136.

The previous prime is 122212400131. The next prime is 122212400161. The reversal of 122212400137 is 731004212221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66586705936 + 55625694201 = 258044^2 + 235851^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-122212400137 is a prime.

It is not a weakly prime, because it can be changed into another prime (122212400131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61106200068 + 61106200069.

It is an arithmetic number, because the mean of its divisors is an integer number (61106200069).

Almost surely, 2^122212400137 is an apocalyptic number.

It is an amenable number.

122212400137 is a deficient number, since it is larger than the sum of its proper divisors (1).

122212400137 is an equidigital number, since it uses as much as digits as its factorization.

122212400137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 25.

Adding to 122212400137 its reverse (731004212221), we get a palindrome (853216612358).

The spelling of 122212400137 in words is "one hundred twenty-two billion, two hundred twelve million, four hundred thousand, one hundred thirty-seven".