222155143 has 4 divisors (see below), whose sum is σ = 253891600. Its totient is φ = 190418688.

The previous prime is 222155093. The next prime is 222155161. The reversal of 222155143 is 341551222.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 222155143 - 2¹⁷ = 222024071 is a prime.

It is a super-2 number, since 2×222155143² = 98705815122700898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222155173) 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, 15868218 + ... + 15868231.

It is an arithmetic number, because the mean of its divisors is an integer number (63472900).

Almost surely, 2^222155143 is an apocalyptic number.

222155143 is a deficient number, since it is larger than the sum of its proper divisors (31736457).

222155143 is an equidigital number, since it uses as much as digits as its factorization.

222155143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31736456.

The product of its digits is 2400, while the sum is 25.

The square root of 222155143 is about 14904.8697746743. The cubic root of 222155143 is about 605.6459126261.

The spelling of 222155143 in words is "two hundred twenty-two million, one hundred fifty-five thousand, one hundred forty-three".