2123221204 has 24 divisors (see below), whose sum is σ = 4057820928. Its totient is φ = 966144480.

The previous prime is 2123221183. The next prime is 2123221213. The reversal of 2123221204 is 4021223212.

It is a super-2 number, since 2×2123221204² = 9016136562230419232, which contains 22 as substring.

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 in 7 ways as a sum of consecutive naturals, for example, 283852 + ... + 291235.

It is an arithmetic number, because the mean of its divisors is an integer number (169075872).

Almost surely, 2^2123221204 is an apocalyptic number.

It is an amenable number.

2123221204 is a deficient number, since it is larger than the sum of its proper divisors (1934599724).

2123221204 is a wasteful number, since it uses less digits than its factorization.

2123221204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 575175 (or 575173 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2123221204 is about 46078.4244956357. The cubic root of 2123221204 is about 1285.2819669204.

Adding to 2123221204 its reverse (4021223212), we get a palindrome (6144444416).

It can be divided in two parts, 21232 and 21204, that added together give a square (42436 = 206²).

The spelling of 2123221204 in words is "two billion, one hundred twenty-three million, two hundred twenty-one thousand, two hundred four".