122640651601 has 12 divisors (see below), whose sum is σ = 132841090800. Its totient is φ = 113171925360.

The previous prime is 122640651599. The next prime is 122640651689. The reversal of 122640651601 is 106156046221.

It is not a de Polignac number, because 122640651601 - 2¹ = 122640651599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122640631601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 447546 + ... + 667516.

It is an arithmetic number, because the mean of its divisors is an integer number (11070090900).

Almost surely, 2^122640651601 is an apocalyptic number.

It is an amenable number.

122640651601 is a deficient number, since it is larger than the sum of its proper divisors (10200439199).

122640651601 is a wasteful number, since it uses less digits than its factorization.

122640651601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223296 (or 223283 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 122640651601 its reverse (106156046221), we get a palindrome (228796697822).

The spelling of 122640651601 in words is "one hundred twenty-two billion, six hundred forty million, six hundred fifty-one thousand, six hundred one".