122221212188 has 24 divisors (see below), whose sum is σ = 221114920320. Its totient is φ = 59051381760.

The previous prime is 122221212187. The next prime is 122221212203. The reversal of 122221212188 is 881212122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221212187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648833 + ... + 815736.

It is an arithmetic number, because the mean of its divisors is an integer number (9213121680).

Almost surely, 2^122221212188 is an apocalyptic number.

It is an amenable number.

122221212188 is a deficient number, since it is larger than the sum of its proper divisors (98893708132).

122221212188 is a wasteful number, since it uses less digits than its factorization.

122221212188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465277 (or 1465275 counting only the distinct ones).

The product of its digits is 4096, while the sum is 32.

The spelling of 122221212188 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twelve thousand, one hundred eighty-eight".