2222100121 has 4 divisors (see below), whose sum is σ = 2273776912. Its totient is φ = 2170423332.

The previous prime is 2222100059. The next prime is 2222100187. The reversal of 2222100121 is 1210012222.

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 a de Polignac number, because none of the positive numbers 2^k-2222100121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222100191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25838331 + ... + 25838416.

It is an arithmetic number, because the mean of its divisors is an integer number (568444228).

Almost surely, 2^2222100121 is an apocalyptic number.

It is an amenable number.

2222100121 is a deficient number, since it is larger than the sum of its proper divisors (51676791).

2222100121 is an equidigital number, since it uses as much as digits as its factorization.

2222100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51676790.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2222100121 is about 47139.1569822796. The cubic root of 2222100121 is about 1304.9319794457.

Adding to 2222100121 its reverse (1210012222), we get a palindrome (3432112343).

The spelling of 2222100121 in words is "two billion, two hundred twenty-two million, one hundred thousand, one hundred twenty-one".