2222100022121 has 4 divisors (see below), whose sum is σ = 2539542882432. Its totient is φ = 1904657161812.

The previous prime is 2222100022091. The next prime is 2222100022133. The reversal of 2222100022121 is 1212200012222.

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 2222100022121 - 2¹⁴ = 2222100005737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2222100022121.

It is not an unprimeable number, because it can be changed into a prime (2222100022921) 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, 158721430145 + ... + 158721430158.

It is an arithmetic number, because the mean of its divisors is an integer number (634885720608).

Almost surely, 2^{2222100022121} is an apocalyptic number.

It is an amenable number.

2222100022121 is a deficient number, since it is larger than the sum of its proper divisors (317442860311).

2222100022121 is an equidigital number, since it uses as much as digits as its factorization.

2222100022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317442860310.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2222100022121 its reverse (1212200012222), we get a palindrome (3434300034343).

The spelling of 2222100022121 in words is "two trillion, two hundred twenty-two billion, one hundred million, twenty-two thousand, one hundred twenty-one".