222002100221 has 12 divisors (see below), whose sum is σ = 254628355296. Its totient is φ = 193045302120.

The previous prime is 222002100167. The next prime is 222002100233. The reversal of 222002100221 is 122001200222.

It is not a de Polignac number, because 222002100221 - 2¹⁸ = 222001838077 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 222002100196 and 222002100205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222002130221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39882611 + ... + 39888176.

It is an arithmetic number, because the mean of its divisors is an integer number (21219029608).

Almost surely, 2^222002100221 is an apocalyptic number.

It is an amenable number.

222002100221 is a deficient number, since it is larger than the sum of its proper divisors (32626255075).

222002100221 is a wasteful number, since it uses less digits than its factorization.

222002100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79770832 (or 79770821 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 222002100221 its reverse (122001200222), we get a palindrome (344003300443).

It can be divided in two parts, 222002 and 100221, that added together give a palindrome (322223).

The spelling of 222002100221 in words is "two hundred twenty-two billion, two million, one hundred thousand, two hundred twenty-one".