1222913877984 has 384 divisors, whose sum is σ = 3857825664000. Its totient is φ = 375871186944.

The previous prime is 1222913877979. The next prime is 1222913878003. The reversal of 1222913877984 is 4897783192221.

1222913877984 is a `hidden beast` number, since 1 + 2 + 22 + 91 + 387 + 79 + 84 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80136147 + ... + 80151405.

It is an arithmetic number, because the mean of its divisors is an integer number (10046421000).

Almost surely, 2^{1222913877984} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222913877984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1928912832000).

1222913877984 is an abundant number, since it is smaller than the sum of its proper divisors (2634911786016).

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

1222913877984 is a wasteful number, since it uses less digits than its factorization.

1222913877984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15447 (or 15433 counting only the distinct ones).

The product of its digits is 24385536, while the sum is 63.

The spelling of 1222913877984 in words is "one trillion, two hundred twenty-two billion, nine hundred thirteen million, eight hundred seventy-seven thousand, nine hundred eighty-four".