222621151 has 2 divisors, whose sum is σ = 222621152. Its totient is φ = 222621150.

The previous prime is 222621143. The next prime is 222621169. The reversal of 222621151 is 151126222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 222621151 - 2³ = 222621143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222621121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111310575 + 111310576.

It is an arithmetic number, because the mean of its divisors is an integer number (111310576).

Almost surely, 2^222621151 is an apocalyptic number.

222621151 is a deficient number, since it is larger than the sum of its proper divisors (1).

222621151 is an equidigital number, since it uses as much as digits as its factorization.

222621151 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 22.

The square root of 222621151 is about 14920.4943282721. The cubic root of 222621151 is about 606.0690984539.

Adding to 222621151 its reverse (151126222), we get a palindrome (373747373).

The spelling of 222621151 in words is "two hundred twenty-two million, six hundred twenty-one thousand, one hundred fifty-one".