222202211212221 has 8 divisors (see below), whose sum is σ = 296912282229024. Its totient is φ = 147813473835120.

The previous prime is 222202211212213. The next prime is 222202211212229. The reversal of 222202211212221 is 122212112202222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222202211212213) and next prime (222202211212229).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 222202211212221 - 2³ = 222202211212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222202211212191 and 222202211212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202211212229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80333408311 + ... + 80333411076.

It is an arithmetic number, because the mean of its divisors is an integer number (37114035278628).

Almost surely, 2^{222202211212221} is an apocalyptic number.

It is an amenable number.

222202211212221 is a deficient number, since it is larger than the sum of its proper divisors (74710071016803).

222202211212221 is a wasteful number, since it uses less digits than its factorization.

222202211212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160666819851.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 222202211212221 its reverse (122212112202222), we get a palindrome (344414323414443).

Subtracting from 222202211212221 its reverse (122212112202222), we obtain a palindrome (99990099009999).

The spelling of 222202211212221 in words is "two hundred twenty-two trillion, two hundred two billion, two hundred eleven million, two hundred twelve thousand, two hundred twenty-one".