222420412234157 has 2 divisors, whose sum is σ = 222420412234158. Its totient is φ = 222420412234156.

The previous prime is 222420412234147. The next prime is 222420412234219. The reversal of 222420412234157 is 751432214024222.

222420412234157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149260684438441 + 73159727795716 = 12217229^2 + 8553346^2 .

It is a cyclic number.

It is not a de Polignac number, because 222420412234157 - 2¹⁸ = 222420411972013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222420412234117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111210206117078 + 111210206117079.

It is an arithmetic number, because the mean of its divisors is an integer number (111210206117079).

Almost surely, 2^{222420412234157} is an apocalyptic number.

It is an amenable number.

222420412234157 is a deficient number, since it is larger than the sum of its proper divisors (1).

222420412234157 is an equidigital number, since it uses as much as digits as its factorization.

222420412234157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 430080, while the sum is 41.

Adding to 222420412234157 its reverse (751432214024222), we get a palindrome (973852626258379).

The spelling of 222420412234157 in words is "two hundred twenty-two trillion, four hundred twenty billion, four hundred twelve million, two hundred thirty-four thousand, one hundred fifty-seven".