199576150121 has 2 divisors, whose sum is σ = 199576150122. Its totient is φ = 199576150120.

The previous prime is 199576150097. The next prime is 199576150127. The reversal of 199576150121 is 121051675991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142234579600 + 57341570521 = 377140^2 + 239461^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-199576150121 is a prime.

It is not a weakly prime, because it can be changed into another prime (199576150127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 99788075060 + 99788075061.

It is an arithmetic number, because the mean of its divisors is an integer number (99788075061).

Almost surely, 2^199576150121 is an apocalyptic number.

It is an amenable number.

199576150121 is a deficient number, since it is larger than the sum of its proper divisors (1).

199576150121 is an equidigital number, since it uses as much as digits as its factorization.

199576150121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 47.

The spelling of 199576150121 in words is "one hundred ninety-nine billion, five hundred seventy-six million, one hundred fifty thousand, one hundred twenty-one".