222212100111121 has 16 divisors (see below), whose sum is σ = 234429907155840. Its totient is φ = 210046924258560.

The previous prime is 222212100111041. The next prime is 222212100111143. The reversal of 222212100111121 is 121111001212222.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 222212100111121 - 2⁴³ = 213416007088913 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222212100111191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15244191 + ... + 26015563.

It is an arithmetic number, because the mean of its divisors is an integer number (14651869197240).

Almost surely, 2^{222212100111121} is an apocalyptic number.

It is an amenable number.

222212100111121 is a deficient number, since it is larger than the sum of its proper divisors (12217807044719).

222212100111121 is a wasteful number, since it uses less digits than its factorization.

222212100111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10773816.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 222212100111121 its reverse (121111001212222), we get a palindrome (343323101323343).

The spelling of 222212100111121 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred million, one hundred eleven thousand, one hundred twenty-one".