211202220121210 has 32 divisors (see below), whose sum is σ = 403820882030592. Its totient is φ = 79255760282880.

The previous prime is 211202220121141. The next prime is 211202220121241. The reversal of 211202220121210 is 12121022202112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1997320122 + ... + 1997425861.

It is an arithmetic number, because the mean of its divisors is an integer number (12619402563456).

Almost surely, 2^{211202220121210} is an apocalyptic number.

211202220121210 is a deficient number, since it is larger than the sum of its proper divisors (192618661909382).

211202220121210 is a wasteful number, since it uses less digits than its factorization.

211202220121210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3994746318.

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

Adding to 211202220121210 its reverse (12121022202112), we get a palindrome (223323242323322).

The spelling of 211202220121210 in words is "two hundred eleven trillion, two hundred two billion, two hundred twenty million, one hundred twenty-one thousand, two hundred ten".