1221847048068 has 48 divisors (see below), whose sum is σ = 3001126275840. Its totient is φ = 385833780000.

The previous prime is 1221847048061. The next prime is 1221847048069. The reversal of 1221847048068 is 8608407481221.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1221847048068.

It is not an unprimeable number, because it can be changed into a prime (1221847048061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8880963 + ... + 9017493.

It is an arithmetic number, because the mean of its divisors is an integer number (62523464080).

Almost surely, 2^{1221847048068} is an apocalyptic number.

It is an amenable number.

1221847048068 is an abundant number, since it is smaller than the sum of its proper divisors (1779279227772).

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

1221847048068 is a wasteful number, since it uses less digits than its factorization.

1221847048068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175808 (or 175806 counting only the distinct ones).

The product of its (nonzero) digits is 1376256, while the sum is 51.

The spelling of 1221847048068 in words is "one trillion, two hundred twenty-one billion, eight hundred forty-seven million, forty-eight thousand, sixty-eight".