11100222202221 has 32 divisors (see below), whose sum is σ = 16612050153600. Its totient is φ = 7324913030400.

The previous prime is 11100222202217. The next prime is 11100222202243. The reversal of 11100222202221 is 12220222200111.

It is a happy number.

11100222202221 is a `hidden beast` number, since 11 + 10 + 0 + 222 + 202 + 221 = 666.

It is not a de Polignac number, because 11100222202221 - 2² = 11100222202217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11100222202194 and 11100222202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100222202921) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9651925 + ... + 10740581.

It is an arithmetic number, because the mean of its divisors is an integer number (519126567300).

Almost surely, 2^{11100222202221} is an apocalyptic number.

It is an amenable number.

11100222202221 is a deficient number, since it is larger than the sum of its proper divisors (5511827951379).

11100222202221 is a wasteful number, since it uses less digits than its factorization.

11100222202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092506 (or 1092500 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11100222202221 its reverse (12220222200111), we get a palindrome (23320444402332).

The spelling of 11100222202221 in words is "eleven trillion, one hundred billion, two hundred twenty-two million, two hundred two thousand, two hundred twenty-one".