220001121100157 has 2 divisors, whose sum is σ = 220001121100158. Its totient is φ = 220001121100156.

The previous prime is 220001121100043. The next prime is 220001121100181. The reversal of 220001121100157 is 751001121100022.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176378081509081 + 43623039591076 = 13280741^2 + 6604774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220001121100157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220001126100157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110000560550078 + 110000560550079.

It is an arithmetic number, because the mean of its divisors is an integer number (110000560550079).

Almost surely, 2^{220001121100157} is an apocalyptic number.

It is an amenable number.

220001121100157 is a deficient number, since it is larger than the sum of its proper divisors (1).

220001121100157 is an equidigital number, since it uses as much as digits as its factorization.

220001121100157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 280, while the sum is 23.

Adding to 220001121100157 its reverse (751001121100022), we get a palindrome (971002242200179).

The spelling of 220001121100157 in words is "two hundred twenty trillion, one billion, one hundred twenty-one million, one hundred thousand, one hundred fifty-seven".