200121111201157 has 2 divisors, whose sum is σ = 200121111201158. Its totient is φ = 200121111201156.

The previous prime is 200121111201133. The next prime is 200121111201163. The reversal of 200121111201157 is 751102111121002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192298847558596 + 7822263642561 = 13867186^2 + 2796831^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-200121111201157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200121111205157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060555600578 + 100060555600579.

It is an arithmetic number, because the mean of its divisors is an integer number (100060555600579).

Almost surely, 2^{200121111201157} is an apocalyptic number.

It is an amenable number.

200121111201157 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121111201157 is an equidigital number, since it uses as much as digits as its factorization.

200121111201157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 280, while the sum is 25.

Adding to 200121111201157 its reverse (751102111121002), we get a palindrome (951223222322159).

The spelling of 200121111201157 in words is "two hundred trillion, one hundred twenty-one billion, one hundred eleven million, two hundred one thousand, one hundred fifty-seven".