222010222121 has 4 divisors (see below), whose sum is σ = 222107897172. Its totient is φ = 221912547072.

The previous prime is 222010222079. The next prime is 222010222193. The reversal of 222010222121 is 121222010222.

It is a happy number.

222010222121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 198826810000 + 23183412121 = 445900^2 + 152261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222010222121 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 222010222121.

It is not an unprimeable number, because it can be changed into a prime (222010222321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48834116 + ... + 48838661.

It is an arithmetic number, because the mean of its divisors is an integer number (55526974293).

Almost surely, 2^222010222121 is an apocalyptic number.

It is an amenable number.

222010222121 is a deficient number, since it is larger than the sum of its proper divisors (97675051).

222010222121 is an equidigital number, since it uses as much as digits as its factorization.

222010222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97675050.

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

Adding to 222010222121 its reverse (121222010222), we get a palindrome (343232232343).

It can be divided in two parts, 222010222 and 121, that multiplied together give a palindrome (26863236862).

The spelling of 222010222121 in words is "two hundred twenty-two billion, ten million, two hundred twenty-two thousand, one hundred twenty-one".