1220031204 has 72 divisors (see below), whose sum is σ = 3316360320. Its totient is φ = 348070464.

The previous prime is 1220031181. The next prime is 1220031209. The reversal of 1220031204 is 4021300221.

It is a super-2 number, since 2×1220031204² = 2976952277467379232, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1220031209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 609934 + ... + 611930.

It is an arithmetic number, because the mean of its divisors is an integer number (46060560).

Almost surely, 2^1220031204 is an apocalyptic number.

1220031204 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220031204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658180160).

1220031204 is an abundant number, since it is smaller than the sum of its proper divisors (2096329116).

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

1220031204 is a wasteful number, since it uses less digits than its factorization.

1220031204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057 (or 3048 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1220031204 is about 34928.9450742504. The cubic root of 1220031204 is about 1068.5388400170.

Adding to 1220031204 its reverse (4021300221), we get a palindrome (5241331425).

The spelling of 1220031204 in words is "one billion, two hundred twenty million, thirty-one thousand, two hundred four".