2100221220011 has 4 divisors (see below), whose sum is σ = 2113598425392. Its totient is φ = 2086844014632.

The previous prime is 2100221219989. The next prime is 2100221220059. The reversal of 2100221220011 is 1100221220012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2100221220011 - 2²⁶ = 2100154111147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2100221220511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6688602455 + ... + 6688602768.

It is an arithmetic number, because the mean of its divisors is an integer number (528399606348).

Almost surely, 2^{2100221220011} is an apocalyptic number.

2100221220011 is a deficient number, since it is larger than the sum of its proper divisors (13377205381).

2100221220011 is a wasteful number, since it uses less digits than its factorization.

2100221220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13377205380.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2100221220011 its reverse (1100221220012), we get a palindrome (3200442440023).

Subtracting from 2100221220011 its reverse (1100221220012), we obtain a palindrome (999999999999).

It can be divided in two parts, 2100221 and 220011, that added together give a palindrome (2320232).

The spelling of 2100221220011 in words is "two trillion, one hundred billion, two hundred twenty-one million, two hundred twenty thousand, eleven".