122661602156 has 24 divisors (see below), whose sum is σ = 225763058304. Its totient is φ = 58232528640.

The previous prime is 122661602153. The next prime is 122661602263. The reversal of 122661602156 is 651206166221.

It is not an unprimeable number, because it can be changed into a prime (122661602153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9325565 + ... + 9338708.

It is an arithmetic number, because the mean of its divisors is an integer number (9406794096).

Almost surely, 2^122661602156 is an apocalyptic number.

It is an amenable number.

122661602156 is a deficient number, since it is larger than the sum of its proper divisors (103101456148).

122661602156 is a wasteful number, since it uses less digits than its factorization.

122661602156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18664361 (or 18664359 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 38.

Adding to 122661602156 its reverse (651206166221), we get a palindrome (773867768377).

The spelling of 122661602156 in words is "one hundred twenty-two billion, six hundred sixty-one million, six hundred two thousand, one hundred fifty-six".