121330200157 has 2 divisors, whose sum is σ = 121330200158. Its totient is φ = 121330200156.

The previous prime is 121330200097. The next prime is 121330200179. The reversal of 121330200157 is 751002033121.

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., 103440067641 + 17890132516 = 321621^2 + 133754^2 .

It is a cyclic number.

It is not a de Polignac number, because 121330200157 - 2²³ = 121321811549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121330200197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60665100078 + 60665100079.

It is an arithmetic number, because the mean of its divisors is an integer number (60665100079).

Almost surely, 2^121330200157 is an apocalyptic number.

It is an amenable number.

121330200157 is a deficient number, since it is larger than the sum of its proper divisors (1).

121330200157 is an equidigital number, since it uses as much as digits as its factorization.

121330200157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 25.

Adding to 121330200157 its reverse (751002033121), we get a palindrome (872332233278).

The spelling of 121330200157 in words is "one hundred twenty-one billion, three hundred thirty million, two hundred thousand, one hundred fifty-seven".