122640330650 has 24 divisors (see below), whose sum is σ = 228207444384. Its totient is φ = 49035394800.

The previous prime is 122640330641. The next prime is 122640330667. The reversal of 122640330650 is 56033046221.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 398702 + ... + 635801.

It is an arithmetic number, because the mean of its divisors is an integer number (9508643516).

Almost surely, 2^122640330650 is an apocalyptic number.

122640330650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122640330650 is a deficient number, since it is larger than the sum of its proper divisors (105567113734).

122640330650 is a wasteful number, since it uses less digits than its factorization.

122640330650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036886 (or 1036881 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

Adding to 122640330650 its reverse (56033046221), we get a palindrome (178673376871).

The spelling of 122640330650 in words is "one hundred twenty-two billion, six hundred forty million, three hundred thirty thousand, six hundred fifty".