111221102211201 has 6 divisors (see below), whose sum is σ = 160652703193970. Its totient is φ = 74147401474128.

The previous prime is 111221102211139. The next prime is 111221102211209. The reversal of 111221102211201 is 102112201122111.

It is a happy number.

111221102211201 is a `hidden beast` number, since 1 + 11 + 221 + 10 + 221 + 1 + 201 = 666.

It can be written as a sum of positive squares in only one way, i.e., 69611055368976 + 41610046842225 = 8343324^2 + 6450585^2 .

It is not a de Polignac number, because 111221102211201 - 2⁶ = 111221102211137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111221102211209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6178950122836 + ... + 6178950122853.

Almost surely, 2^{111221102211201} is an apocalyptic number.

It is an amenable number.

111221102211201 is a deficient number, since it is larger than the sum of its proper divisors (49431600982769).

111221102211201 is a wasteful number, since it uses less digits than its factorization.

111221102211201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12357900245695 (or 12357900245692 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111221102211201 its reverse (102112201122111), we get a palindrome (213333303333312).

The spelling of 111221102211201 in words is "one hundred eleven trillion, two hundred twenty-one billion, one hundred two million, two hundred eleven thousand, two hundred one".