1222118105644 has 24 divisors (see below), whose sum is σ = 2273909310288. Its totient is φ = 572728028160.

The previous prime is 1222118105573. The next prime is 1222118105693. The reversal of 1222118105644 is 4465018112221.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37270594 + ... + 37303369.

It is an arithmetic number, because the mean of its divisors is an integer number (94746221262).

Almost surely, 2^{1222118105644} is an apocalyptic number.

It is an amenable number.

1222118105644 is a deficient number, since it is larger than the sum of its proper divisors (1051791204644).

1222118105644 is a wasteful number, since it uses less digits than its factorization.

1222118105644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74574225 (or 74574223 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 1222118105644 in words is "one trillion, two hundred twenty-two billion, one hundred eighteen million, one hundred five thousand, six hundred forty-four".