222102012121 has 4 divisors (see below), whose sum is σ = 242293104144. Its totient is φ = 201910920100.

The previous prime is 222102012113. The next prime is 222102012163. The reversal of 222102012121 is 121210201222.

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 222102012121 - 2³ = 222102012113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222102012095 and 222102012104.

It is not an unprimeable number, because it can be changed into a prime (222102012421) 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, 10095545995 + ... + 10095546016.

It is an arithmetic number, because the mean of its divisors is an integer number (60573276036).

Almost surely, 2^222102012121 is an apocalyptic number.

It is an amenable number.

222102012121 is a deficient number, since it is larger than the sum of its proper divisors (20191092023).

222102012121 is a wasteful number, since it uses less digits than its factorization.

222102012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20191092022.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222102012121 its reverse (121210201222), we get a palindrome (343312213343).

The spelling of 222102012121 in words is "two hundred twenty-two billion, one hundred two million, twelve thousand, one hundred twenty-one".