1222221012984 has 96 divisors (see below), whose sum is σ = 3565434787200. Its totient is φ = 376988592960.

The previous prime is 1222221012973. The next prime is 1222221013073. The reversal of 1222221012984 is 4892101222221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10329972 + ... + 10447619.

It is an arithmetic number, because the mean of its divisors is an integer number (37139945700).

Almost surely, 2^{1222221012984} is an apocalyptic number.

It is an amenable number.

1222221012984 is an abundant number, since it is smaller than the sum of its proper divisors (2343213774216).

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

1222221012984 is a wasteful number, since it uses less digits than its factorization.

1222221012984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20777665 (or 20777658 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The spelling of 1222221012984 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, twelve thousand, nine hundred eighty-four".