222155101 has 4 divisors (see below), whose sum is σ = 253891552. Its totient is φ = 190418652.

The previous prime is 222155093. The next prime is 222155161. The reversal of 222155101 is 101551222.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 101551222 = 2 ⋅50775611.

It is a cyclic number.

It is not a de Polignac number, because 222155101 - 2³ = 222155093 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 (222155161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15868215 + ... + 15868228.

It is an arithmetic number, because the mean of its divisors is an integer number (63472888).

Almost surely, 2^222155101 is an apocalyptic number.

It is an amenable number.

222155101 is a deficient number, since it is larger than the sum of its proper divisors (31736451).

222155101 is an equidigital number, since it uses as much as digits as its factorization.

222155101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31736450.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 222155101 is about 14904.8683657388. The cubic root of 222155101 is about 605.6458744588.

The spelling of 222155101 in words is "two hundred twenty-two million, one hundred fifty-five thousand, one hundred one".