2122121212210 has 16 divisors (see below), whose sum is σ = 3820714719192. Its totient is φ = 848649254400.

The previous prime is 2122121212199. The next prime is 2122121212213. The reversal of 2122121212210 is 122121212212.

It can be written as a sum of positive squares in 4 ways, for example, as 2121412641049 + 708571161 = 1456507^2 + 26619^2 .

It is not an unprimeable number, because it can be changed into a prime (2122121212213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24859071 + ... + 24944290.

Almost surely, 2^{2122121212210} is an apocalyptic number.

2122121212210 is a deficient number, since it is larger than the sum of its proper divisors (1698593506982).

2122121212210 is a wasteful number, since it uses less digits than its factorization.

2122121212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49807629.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2122121212210 its reverse (122121212212), we get a palindrome (2244242424422).

The spelling of 2122121212210 in words is "two trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twelve thousand, two hundred ten".