1220994044 has 6 divisors (see below), whose sum is σ = 2136739584. Its totient is φ = 610497020.

The previous prime is 1220994001. The next prime is 1220994053. The reversal of 1220994044 is 4404990221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1220993995 and 1220994013.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152624252 + ... + 152624259.

It is an arithmetic number, because the mean of its divisors is an integer number (356123264).

Almost surely, 2^1220994044 is an apocalyptic number.

It is an amenable number.

1220994044 is a deficient number, since it is larger than the sum of its proper divisors (915745540).

1220994044 is a wasteful number, since it uses less digits than its factorization.

1220994044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305248515 (or 305248513 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1220994044 is about 34942.7251942375. The cubic root of 1220994044 is about 1068.8198605360.

The spelling of 1220994044 in words is "one billion, two hundred twenty million, nine hundred ninety-four thousand, forty-four".