1111111022201 has 4 divisors (see below), whose sum is σ = 1111113370512. Its totient is φ = 1111108673892.

The previous prime is 1111111022173. The next prime is 1111111022221. The reversal of 1111111022201 is 1022201111111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111111022201 - 2²⁶ = 1111043913337 is a prime.

It is a super-2 number, since 2×1111111022201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1111111022221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188771 + ... + 1502616.

It is an arithmetic number, because the mean of its divisors is an integer number (277778342628).

Almost surely, 2^{1111111022201} is an apocalyptic number.

It is an amenable number.

1111111022201 is a deficient number, since it is larger than the sum of its proper divisors (2348311).

1111111022201 is an equidigital number, since it uses as much as digits as its factorization.

1111111022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2348310.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1111111022201 its reverse (1022201111111), we get a palindrome (2133312133312).

It can be divided in two parts, 111111 and 1022201, that multiplied together give a palindrome (113577775311).

The spelling of 1111111022201 in words is "one trillion, one hundred eleven billion, one hundred eleven million, twenty-two thousand, two hundred one".