2223121210 has 32 divisors (see below), whose sum is σ = 4113018000. Its totient is φ = 864821760.

The previous prime is 2223121193. The next prime is 2223121213. The reversal of 2223121210 is 121213222.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 107765161 + 2115356049 = 10381^2 + 45993^2 .

It is not an unprimeable number, because it can be changed into a prime (2223121213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33816 + ... + 74764.

Almost surely, 2^2223121210 is an apocalyptic number.

2223121210 is a deficient number, since it is larger than the sum of its proper divisors (1889896790).

2223121210 is a wasteful number, since it uses less digits than its factorization.

2223121210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41106.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 2223121210 is about 47149.9863202525. The cubic root of 2223121210 is about 1305.1318275736.

Adding to 2223121210 its reverse (121213222), we get a palindrome (2344334432).

The spelling of 2223121210 in words is "two billion, two hundred twenty-three million, one hundred twenty-one thousand, two hundred ten".