222221200021101 has 6 divisors (see below), whose sum is σ = 320986177808270. Its totient is φ = 148147466680728.

The previous prime is 222221200021081. The next prime is 222221200021127. The reversal of 222221200021101 is 101120002122222.

It is a happy number.

222221200021101 is a `hidden beast` number, since 222 + 221 + 200 + 0 + 21 + 1 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 170305788615876 + 51915411405225 = 13050126^2 + 7205235^2 .

It is not a de Polignac number, because 222221200021101 - 2⁴⁷ = 81483711665773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222221200021181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12345622223386 + ... + 12345622223403.

Almost surely, 2^{222221200021101} is an apocalyptic number.

It is an amenable number.

222221200021101 is a deficient number, since it is larger than the sum of its proper divisors (98764977787169).

222221200021101 is a wasteful number, since it uses less digits than its factorization.

222221200021101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24691244446795 (or 24691244446792 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 222221200021101 its reverse (101120002122222), we get a palindrome (323341202143323).

The spelling of 222221200021101 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, two hundred million, twenty-one thousand, one hundred one".