2121202222210 has 16 divisors (see below), whose sum is σ = 3820496444856. Its totient is φ = 847962567808.

The previous prime is 2121202222201. The next prime is 2121202222273. The reversal of 2121202222210 is 122222021212.

It can be written as a sum of positive squares in 4 ways, for example, as 368117652529 + 1753084569681 = 606727^2 + 1324041^2 .

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, 64772947 + ... + 64805686.

Almost surely, 2^{2121202222210} is an apocalyptic number.

2121202222210 is a deficient number, since it is larger than the sum of its proper divisors (1699294222646).

2121202222210 is a wasteful number, since it uses less digits than its factorization.

2121202222210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129580277.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2121202222210 its reverse (122222021212), we get a palindrome (2243424243422).

The spelling of 2121202222210 in words is "two trillion, one hundred twenty-one billion, two hundred two million, two hundred twenty-two thousand, two hundred ten".