22200222021157 has 2 divisors, whose sum is σ = 22200222021158. Its totient is φ = 22200222021156.

The previous prime is 22200222021151. The next prime is 22200222021227. The reversal of 22200222021157 is 75112022200222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22022362454401 + 177859566756 = 4692799^2 + 421734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22200222021157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22200222021151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11100111010578 + 11100111010579.

It is an arithmetic number, because the mean of its divisors is an integer number (11100111010579).

Almost surely, 2^{22200222021157} is an apocalyptic number.

It is an amenable number.

22200222021157 is a deficient number, since it is larger than the sum of its proper divisors (1).

22200222021157 is an equidigital number, since it uses as much as digits as its factorization.

22200222021157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 28.

Adding to 22200222021157 its reverse (75112022200222), we get a palindrome (97312244221379).

The spelling of 22200222021157 in words is "twenty-two trillion, two hundred billion, two hundred twenty-two million, twenty-one thousand, one hundred fifty-seven".