122640610460281 has 2 divisors, whose sum is σ = 122640610460282. Its totient is φ = 122640610460280.

The previous prime is 122640610460273. The next prime is 122640610460341. The reversal of 122640610460281 is 182064016046221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107501313104656 + 15139297355625 = 10368284^2 + 3890925^2 .

It is a cyclic number.

It is not a de Polignac number, because 122640610460281 - 2³ = 122640610460273 is a prime.

It is a super-2 number, since 2×122640610460281² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (122640610466281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61320305230140 + 61320305230141.

It is an arithmetic number, because the mean of its divisors is an integer number (61320305230141).

Almost surely, 2^{122640610460281} is an apocalyptic number.

It is an amenable number.

122640610460281 is a deficient number, since it is larger than the sum of its proper divisors (1).

122640610460281 is an equidigital number, since it uses as much as digits as its factorization.

122640610460281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 122640610460281 in words is "one hundred twenty-two trillion, six hundred forty billion, six hundred ten million, four hundred sixty thousand, two hundred eighty-one".