222122011986 has 96 divisors (see below), whose sum is σ = 579010049280. Its totient is φ = 60166858752.

The previous prime is 222122011981. The next prime is 222122012017. The reversal of 222122011986 is 689110221222.

It is a self number, because there is not a number n which added to its sum of digits gives 222122011986.

It is not an unprimeable number, because it can be changed into a prime (222122011981) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 11671 + ... + 666618.

It is an arithmetic number, because the mean of its divisors is an integer number (6031354680).

Almost surely, 2^222122011986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222122011986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (289505024640).

222122011986 is an abundant number, since it is smaller than the sum of its proper divisors (356888037294).

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

222122011986 is a wasteful number, since it uses less digits than its factorization.

222122011986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678440 (or 678437 counting only the distinct ones).

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

The spelling of 222122011986 in words is "two hundred twenty-two billion, one hundred twenty-two million, eleven thousand, nine hundred eighty-six".