222101121 has 32 divisors (see below), whose sum is σ = 335258496. Its totient is φ = 129600000.

The previous prime is 222101101. The next prime is 222101123. The reversal of 222101121 is 121101222.

It is not a de Polignac number, because 222101121 - 2⁶ = 222101057 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222101097 and 222101106.

It is not an unprimeable number, because it can be changed into a prime (222101123) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 122421 + ... + 124221.

It is an arithmetic number, because the mean of its divisors is an integer number (10476828).

Almost surely, 2^222101121 is an apocalyptic number.

It is an amenable number.

222101121 is a deficient number, since it is larger than the sum of its proper divisors (113157375).

222101121 is a wasteful number, since it uses less digits than its factorization.

222101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 222101121 is about 14903.0574379890. The cubic root of 222101121 is about 605.5968165222.

Adding to 222101121 its reverse (121101222), we get a palindrome (343202343).

It can be divided in two parts, 222101 and 121, that added together give a palindrome (222222).

The spelling of 222101121 in words is "two hundred twenty-two million, one hundred one thousand, one hundred twenty-one".