122311700720 has 80 divisors (see below), whose sum is σ = 313239094272. Its totient is φ = 44045134080.

The previous prime is 122311700711. The next prime is 122311700741. The reversal of 122311700720 is 27007113221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 122311700720.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584072 + ... + 765351.

Almost surely, 2^122311700720 is an apocalyptic number.

122311700720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122311700720 is an abundant number, since it is smaller than the sum of its proper divisors (190927393552).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

122311700720 is a wasteful number, since it uses less digits than its factorization.

122311700720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349550 (or 1349544 counting only the distinct ones).

The product of its (nonzero) digits is 1176, while the sum is 26.

Adding to 122311700720 its reverse (27007113221), we get a palindrome (149318813941).

The spelling of 122311700720 in words is "one hundred twenty-two billion, three hundred eleven million, seven hundred thousand, seven hundred twenty".