2111221112210 has 64 divisors (see below), whose sum is σ = 4534756434432. Its totient is φ = 691941229056.

The previous prime is 2111221112197. The next prime is 2111221112303. The reversal of 2111221112210 is 122111221112.

It is a super-2 number, since 2×2111221112210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2160614 + ... + 2981726.

It is an arithmetic number, because the mean of its divisors is an integer number (70855569288).

Almost surely, 2^{2111221112210} is an apocalyptic number.

2111221112210 is an abundant number, since it is smaller than the sum of its proper divisors (2423535322222).

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

2111221112210 is a wasteful number, since it uses less digits than its factorization.

2111221112210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822747.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2111221112210 its reverse (122111221112), we get a palindrome (2233332333322).

The spelling of 2111221112210 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, one hundred twelve thousand, two hundred ten".