1111122222201 has 12 divisors (see below), whose sum is σ = 1605219988528. Its totient is φ = 740625532344.

The previous prime is 1111122222193. The next prime is 1111122222227. The reversal of 1111122222201 is 1022222211111.

1111122222201 is a `hidden beast` number, since 111 + 112 + 222 + 220 + 1 = 666.

It is not a de Polignac number, because 1111122222201 - 2³ = 1111122222193 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1111122222101) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10160575 + ... + 10269348.

Almost surely, 2^{1111122222201} is an apocalyptic number.

It is an amenable number.

1111122222201 is a deficient number, since it is larger than the sum of its proper divisors (494097766327).

1111122222201 is a wasteful number, since it uses less digits than its factorization.

1111122222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20435972 (or 20435969 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1111122222201 its reverse (1022222211111), we get a palindrome (2133344433312).

The spelling of 1111122222201 in words is "one trillion, one hundred eleven billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred one".