201201201220157 has 2 divisors, whose sum is σ = 201201201220158. Its totient is φ = 201201201220156.

The previous prime is 201201201220093. The next prime is 201201201220211. The reversal of 201201201220157 is 751022102102102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 199823838440836 + 1377362779321 = 14135906^2 + 1173611^2 .

It is a cyclic number.

It is not a de Polignac number, because 201201201220157 - 2⁶ = 201201201220093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201201201220057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100600600610078 + 100600600610079.

It is an arithmetic number, because the mean of its divisors is an integer number (100600600610079).

Almost surely, 2^{201201201220157} is an apocalyptic number.

It is an amenable number.

201201201220157 is a deficient number, since it is larger than the sum of its proper divisors (1).

201201201220157 is an equidigital number, since it uses as much as digits as its factorization.

201201201220157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1120, while the sum is 26.

Adding to 201201201220157 its reverse (751022102102102), we get a palindrome (952223303322259).

The spelling of 201201201220157 in words is "two hundred one trillion, two hundred one billion, two hundred one million, two hundred twenty thousand, one hundred fifty-seven".