222221110220001 has 24 divisors (see below), whose sum is σ = 326241757498176. Its totient is φ = 145731115027680.

The previous prime is 222221110219981. The next prime is 222221110220009. The reversal of 222221110220001 is 100022011122222.

It is a happy number.

222221110220001 is a `hidden beast` number, since 2 + 222 + 211 + 10 + 220 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 222221110220001 - 2¹⁹ = 222221109695713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222221110220009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392226930 + ... + 392793083.

It is an arithmetic number, because the mean of its divisors is an integer number (13593406562424).

Almost surely, 2^{222221110220001} is an apocalyptic number.

It is an amenable number.

222221110220001 is a deficient number, since it is larger than the sum of its proper divisors (104020647278175).

222221110220001 is a wasteful number, since it uses less digits than its factorization.

222221110220001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 785020533 (or 785020530 counting only the distinct ones).

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

Adding to 222221110220001 its reverse (100022011122222), we get a palindrome (322243121342223).

The spelling of 222221110220001 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred ten million, two hundred twenty thousand, one".