2122221210 has 32 divisors (see below), whose sum is σ = 5230991232. Its totient is φ = 550630080.

The previous prime is 2122221151. The next prime is 2122221217. The reversal of 2122221210 is 121222212.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2122221210.

It is not an unprimeable number, because it can be changed into a prime (2122221217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 954846 + ... + 957065.

It is an arithmetic number, because the mean of its divisors is an integer number (163468476).

Almost surely, 2^2122221210 is an apocalyptic number.

2122221210 is an abundant number, since it is smaller than the sum of its proper divisors (3108770022).

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

2122221210 is a wasteful number, since it uses less digits than its factorization.

2122221210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1911958.

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 2122221210 is about 46067.5722173418. The cubic root of 2122221210 is about 1285.0801546795.

Adding to 2122221210 its reverse (121222212), we get a palindrome (2243443422).

The spelling of 2122221210 in words is "two billion, one hundred twenty-two million, two hundred twenty-one thousand, two hundred ten".