2221121100211 has 32 divisors (see below), whose sum is σ = 2504536034112. Its totient is φ = 1956240599040.

The previous prime is 2221121100197. The next prime is 2221121100217. The reversal of 2221121100211 is 1120011211222.

It is not a de Polignac number, because 2221121100211 - 2⁵ = 2221121100179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221121100217) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 8716336 + ... + 8967538.

It is an arithmetic number, because the mean of its divisors is an integer number (78266751066).

Almost surely, 2^{2221121100211} is an apocalyptic number.

2221121100211 is a deficient number, since it is larger than the sum of its proper divisors (283414933901).

2221121100211 is a wasteful number, since it uses less digits than its factorization.

2221121100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251623.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2221121100211 its reverse (1120011211222), we get a palindrome (3341132311433).

The spelling of 2221121100211 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, one hundred thousand, two hundred eleven".