2002222201221 has 64 divisors (see below), whose sum is σ = 3256095801600. Its totient is φ = 1205922816000.

The previous prime is 2002222201157. The next prime is 2002222201223. The reversal of 2002222201221 is 1221022222002.

2002222201221 is a `hidden beast` number, since 2 + 0 + 0 + 222 + 220 + 1 + 221 = 666.

It is not a de Polignac number, because 2002222201221 - 2⁶ = 2002222201157 is a prime.

It is a super-2 number, since 2×2002222201221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2002222201194 and 2002222201203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002222201223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32005845 + ... + 32068341.

It is an arithmetic number, because the mean of its divisors is an integer number (50876496900).

Almost surely, 2^{2002222201221} is an apocalyptic number.

It is an amenable number.

2002222201221 is a deficient number, since it is larger than the sum of its proper divisors (1253873600379).

2002222201221 is a wasteful number, since it uses less digits than its factorization.

2002222201221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63187 (or 63181 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 2002222201221 its reverse (1221022222002), we get a palindrome (3223244423223).

The spelling of 2002222201221 in words is "two trillion, two billion, two hundred twenty-two million, two hundred one thousand, two hundred twenty-one".