1222199964 has 36 divisors (see below), whose sum is σ = 3132969840. Its totient is φ = 401661120.

The previous prime is 1222199939. The next prime is 1222199999. The reversal of 1222199964 is 4699912221.

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 236529 + ... + 241640.

It is an arithmetic number, because the mean of its divisors is an integer number (87026940).

Almost surely, 2^1222199964 is an apocalyptic number.

It is an amenable number.

1222199964 is an abundant number, since it is smaller than the sum of its proper divisors (1910769876).

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

1222199964 is a wasteful number, since it uses less digits than its factorization.

1222199964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 478250 (or 478245 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 1222199964 is about 34959.9766018228. The cubic root of 1222199964 is about 1069.1716195945.

The spelling of 1222199964 in words is "one billion, two hundred twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-four".