222100112121 has 16 divisors (see below), whose sum is σ = 305895134784. Its totient is φ = 143232179904.

The previous prime is 222100112107. The next prime is 222100112123. The reversal of 222100112121 is 121211001222.

It is not a de Polignac number, because 222100112121 - 2⁷ = 222100111993 is a prime.

It is a super-2 number, since 2×222100112121² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 222100112121.

It is not an unprimeable number, because it can be changed into a prime (222100112123) 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, 5763751 + ... + 5802156.

It is an arithmetic number, because the mean of its divisors is an integer number (19118445924).

Almost surely, 2^222100112121 is an apocalyptic number.

It is an amenable number.

222100112121 is a deficient number, since it is larger than the sum of its proper divisors (83795022663).

222100112121 is a wasteful number, since it uses less digits than its factorization.

222100112121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11566120.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222100112121 its reverse (121211001222), we get a palindrome (343311113343).

The spelling of 222100112121 in words is "two hundred twenty-two billion, one hundred million, one hundred twelve thousand, one hundred twenty-one".