122040522451 has 4 divisors (see below), whose sum is σ = 124343173872. Its totient is φ = 119737871032.

The previous prime is 122040522419. The next prime is 122040522481. The reversal of 122040522451 is 154225040221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 122040522451 - 2⁵ = 122040522419 is a prime.

It is a super-2 number, since 2×122040522451² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122040522481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1151325631 + ... + 1151325736.

It is an arithmetic number, because the mean of its divisors is an integer number (31085793468).

Almost surely, 2^122040522451 is an apocalyptic number.

122040522451 is a deficient number, since it is larger than the sum of its proper divisors (2302651421).

122040522451 is an equidigital number, since it uses as much as digits as its factorization.

122040522451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302651420.

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 122040522451 its reverse (154225040221), we get a palindrome (276265562672).

The spelling of 122040522451 in words is "one hundred twenty-two billion, forty million, five hundred twenty-two thousand, four hundred fifty-one".