11100212202221 has 16 divisors (see below), whose sum is σ = 11482128473088. Its totient is φ = 10723604515200.

The previous prime is 11100212202199. The next prime is 11100212202227. The reversal of 11100212202221 is 12220221200111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11100212202221 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11100212202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100212202227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68082020 + ... + 68244866.

It is an arithmetic number, because the mean of its divisors is an integer number (717633029568).

Almost surely, 2^{11100212202221} is an apocalyptic number.

It is an amenable number.

11100212202221 is a deficient number, since it is larger than the sum of its proper divisors (381916270867).

11100212202221 is a wasteful number, since it uses less digits than its factorization.

11100212202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179132.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 11100212202221 its reverse (12220221200111), we get a palindrome (23320433402332).

The spelling of 11100212202221 in words is "eleven trillion, one hundred billion, two hundred twelve million, two hundred two thousand, two hundred twenty-one".