1220199994 has 16 divisors (see below), whose sum is σ = 2013032448. Its totient is φ = 551186352.

The previous prime is 1220199983. The next prime is 1220199997. The reversal of 1220199994 is 4999910221.

It is not an unprimeable number, because it can be changed into a prime (1220199997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498042 + ... + 500485.

It is an arithmetic number, because the mean of its divisors is an integer number (125814528).

Almost surely, 2^1220199994 is an apocalyptic number.

1220199994 is a deficient number, since it is larger than the sum of its proper divisors (792832454).

1220199994 is a wasteful number, since it uses less digits than its factorization.

1220199994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 998589.

The product of its (nonzero) digits is 104976, while the sum is 46.

The square root of 1220199994 is about 34931.3611816087. The cubic root of 1220199994 is about 1068.5881148097.

The spelling of 1220199994 in words is "one billion, two hundred twenty million, one hundred ninety-nine thousand, nine hundred ninety-four".