222051 has 4 divisors (see below), whose sum is σ = 296072. Its totient is φ = 148032.

The previous prime is 222043. The next prime is 222059. The reversal of 222051 is 150222.

222051 is nontrivially palindromic in base 16.

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

It is an interprime number because it is at equal distance from previous prime (222043) and next prime (222059).

It is not a de Polignac number, because 222051 - 2³ = 222043 is a prime.

It is a D-number.

It is a Duffinian number.

222051 is an undulating number in base 16.

It is not an unprimeable number, because it can be changed into a prime (222059) 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, 37006 + ... + 37011.

It is an arithmetic number, because the mean of its divisors is an integer number (74018).

2²²²⁰⁵¹ is an apocalyptic number.

222051 is a deficient number, since it is larger than the sum of its proper divisors (74021).

222051 is an equidigital number, since it uses as much as digits as its factorization.

222051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74020.

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 222051 is about 471.2228772036. Note that the first 3 decimals coincide. The cubic root of 222051 is about 60.5551258593. Note that the first 3 decimals are identical.

Adding to 222051 its reverse (150222), we get a palindrome (372273).

The spelling of 222051 in words is "two hundred twenty-two thousand, fifty-one".