122621722120 has 16 divisors (see below), whose sum is σ = 275898874860. Its totient is φ = 49048688832.

The previous prime is 122621722099. The next prime is 122621722123. The reversal of 122621722120 is 21227126221.

It can be written as a sum of positive squares in 2 ways, for example, as 112881216484 + 9740505636 = 335978^2 + 98694^2 .

It is not an unprimeable number, because it can be changed into a prime (122621722123) 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, 1532771487 + ... + 1532771566.

Almost surely, 2^122621722120 is an apocalyptic number.

122621722120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

122621722120 is an abundant number, since it is smaller than the sum of its proper divisors (153277152740).

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

122621722120 is a wasteful number, since it uses less digits than its factorization.

122621722120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3065543064 (or 3065543060 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 122621722120 its reverse (21227126221), we get a palindrome (143848848341).

The spelling of 122621722120 in words is "one hundred twenty-two billion, six hundred twenty-one million, seven hundred twenty-two thousand, one hundred twenty".