201212212210157 has 2 divisors, whose sum is σ = 201212212210158. Its totient is φ = 201212212210156.

The previous prime is 201212212210081. The next prime is 201212212210169. The reversal of 201212212210157 is 751012212212102.

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., 174252170612521 + 26960041597636 = 13200461^2 + 5192306^2 .

It is a cyclic number.

It is not a de Polignac number, because 201212212210157 - 2²² = 201212208015853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201212212210187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100606106105078 + 100606106105079.

It is an arithmetic number, because the mean of its divisors is an integer number (100606106105079).

Almost surely, 2^{201212212210157} is an apocalyptic number.

It is an amenable number.

201212212210157 is a deficient number, since it is larger than the sum of its proper divisors (1).

201212212210157 is an equidigital number, since it uses as much as digits as its factorization.

201212212210157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 29.

Adding to 201212212210157 its reverse (751012212212102), we get a palindrome (952224424422259).

The spelling of 201212212210157 in words is "two hundred one trillion, two hundred twelve billion, two hundred twelve million, two hundred ten thousand, one hundred fifty-seven".