122200111128 has 16 divisors (see below), whose sum is σ = 305500277880. Its totient is φ = 40733370368.

The previous prime is 122200111097. The next prime is 122200111129. The reversal of 122200111128 is 821111002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122200111129) 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, 2545835625 + ... + 2545835672.

Almost surely, 2^122200111128 is an apocalyptic number.

It is an amenable number.

122200111128 is an abundant number, since it is smaller than the sum of its proper divisors (183300166752).

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

122200111128 is a wasteful number, since it uses less digits than its factorization.

122200111128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5091671306 (or 5091671302 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

Adding to 122200111128 its reverse (821111002221), we get a palindrome (943311113349).

The spelling of 122200111128 in words is "one hundred twenty-two billion, two hundred million, one hundred eleven thousand, one hundred twenty-eight".