1111201222101 has 4 divisors (see below), whose sum is σ = 1481601629472. Its totient is φ = 740800814732.

The previous prime is 1111201222081. The next prime is 1111201222123. The reversal of 1111201222101 is 1012221021111.

It is a happy number.

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 1111201222101 - 2⁵ = 1111201222069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201222151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185200203681 + ... + 185200203686.

It is an arithmetic number, because the mean of its divisors is an integer number (370400407368).

Almost surely, 2^{1111201222101} is an apocalyptic number.

It is an amenable number.

1111201222101 is a deficient number, since it is larger than the sum of its proper divisors (370400407371).

1111201222101 is an equidigital number, since it uses as much as digits as its factorization.

1111201222101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370400407370.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111201222101 its reverse (1012221021111), we get a palindrome (2123422243212).

The spelling of 1111201222101 in words is "one trillion, one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred one".