222012157 has 2 divisors, whose sum is σ = 222012158. Its totient is φ = 222012156.

The previous prime is 222012151. The next prime is 222012179. The reversal of 222012157 is 751210222.

It is an a-pointer prime, because the next prime (222012179) can be obtained adding 222012157 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159617956 + 62394201 = 12634^2 + 7899^2 .

It is a cyclic number.

It is not a de Polignac number, because 222012157 - 2⁷ = 222012029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222012151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111006078 + 111006079.

It is an arithmetic number, because the mean of its divisors is an integer number (111006079).

Almost surely, 2^222012157 is an apocalyptic number.

It is an amenable number.

222012157 is a deficient number, since it is larger than the sum of its proper divisors (1).

222012157 is an equidigital number, since it uses as much as digits as its factorization.

222012157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 222012157 is about 14900.0723823745. The cubic root of 222012157 is about 605.5159471866.

Adding to 222012157 its reverse (751210222), we get a palindrome (973222379).

The spelling of 222012157 in words is "two hundred twenty-two million, twelve thousand, one hundred fifty-seven".