122221201986 has 24 divisors (see below), whose sum is σ = 285182805180. Its totient is φ = 37606523616.

The previous prime is 122221201967. The next prime is 122221202027. The reversal of 122221201986 is 689102122221.

It can be written as a sum of positive squares in 2 ways, for example, as 86303750625 + 35917451361 = 293775^2 + 189519^2 .

It is a super-2 number, since 2×122221201986² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 122221201986.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 261156181 + ... + 261156648.

Almost surely, 2^122221201986 is an apocalyptic number.

122221201986 is an abundant number, since it is smaller than the sum of its proper divisors (162961603194).

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

122221201986 is a wasteful number, since it uses less digits than its factorization.

122221201986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522312850 (or 522312847 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The spelling of 122221201986 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, nine hundred eighty-six".