2221223230157 has 2 divisors, whose sum is σ = 2221223230158. Its totient is φ = 2221223230156.

The previous prime is 2221223230129. The next prime is 2221223230211. The reversal of 2221223230157 is 7510323221222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1673902914436 + 547320315721 = 1293794^2 + 739811^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221223230157 - 2¹⁴ = 2221223213773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2221223230957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110611615078 + 1110611615079.

It is an arithmetic number, because the mean of its divisors is an integer number (1110611615079).

Almost surely, 2^{2221223230157} is an apocalyptic number.

It is an amenable number.

2221223230157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221223230157 is an equidigital number, since it uses as much as digits as its factorization.

2221223230157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 2221223230157 its reverse (7510323221222), we get a palindrome (9731546451379).

The spelling of 2221223230157 in words is "two trillion, two hundred twenty-one billion, two hundred twenty-three million, two hundred thirty thousand, one hundred fifty-seven".