222221002000221 has 48 divisors (see below), whose sum is σ = 378445129380864. Its totient is φ = 122997402484992.

The previous prime is 222221002000219. The next prime is 222221002000223. The reversal of 222221002000221 is 122000200122222.

222221002000221 is a `hidden beast` number, since 2 + 22 + 221 + 0 + 0 + 200 + 0 + 221 = 666.

It is an interprime number because it is at equal distance from previous prime (222221002000219) and next prime (222221002000223).

It is not a de Polignac number, because 222221002000221 - 2¹ = 222221002000219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222221002000194 and 222221002000203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221002000223) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213231096 + ... + 214270721.

It is an arithmetic number, because the mean of its divisors is an integer number (7884273528768).

Almost surely, 2^{222221002000221} is an apocalyptic number.

222221002000221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

222221002000221 is a deficient number, since it is larger than the sum of its proper divisors (156224127380643).

222221002000221 is a wasteful number, since it uses less digits than its factorization.

222221002000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427502090 (or 427502087 counting only the distinct ones).

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

Adding to 222221002000221 its reverse (122000200122222), we get a palindrome (344221202122443).

The spelling of 222221002000221 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two million, two hundred twenty-one", and thus it is an aban number.