222401101 has 4 divisors (see below), whose sum is σ = 239508892. Its totient is φ = 205293312.

The previous prime is 222401083. The next prime is 222401119. The reversal of 222401101 is 101104222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 101104222 = 2 ⋅50552111.

It is an interprime number because it is at equal distance from previous prime (222401083) and next prime (222401119).

It can be written as a sum of positive squares in 2 ways, for example, as 12180100 + 210221001 = 3490^2 + 14499^2 .

It is a cyclic number.

It is not a de Polignac number, because 222401101 - 2¹⁷ = 222270029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13), and also a Moran number because the ratio is a prime number: 17107777 = 222401101 / (2 + 2 + 2 + 4 + 0 + 1 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222401131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8553876 + ... + 8553901.

It is an arithmetic number, because the mean of its divisors is an integer number (59877223).

Almost surely, 2^222401101 is an apocalyptic number.

It is an amenable number.

222401101 is a deficient number, since it is larger than the sum of its proper divisors (17107791).

222401101 is a wasteful number, since it uses less digits than its factorization.

222401101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17107790.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 222401101 is about 14913.1184197002. The cubic root of 222401101 is about 605.8693428446.

Adding to 222401101 its reverse (101104222), we get a palindrome (323505323).

The spelling of 222401101 in words is "two hundred twenty-two million, four hundred one thousand, one hundred one".