121100200187 has 2 divisors, whose sum is σ = 121100200188. Its totient is φ = 121100200186.

The previous prime is 121100200157. The next prime is 121100200241. The reversal of 121100200187 is 781002001121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121100200187 is a prime.

It is not a weakly prime, because it can be changed into another prime (121100200127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550100093 + 60550100094.

It is an arithmetic number, because the mean of its divisors is an integer number (60550100094).

Almost surely, 2^121100200187 is an apocalyptic number.

121100200187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100200187 is an equidigital number, since it uses as much as digits as its factorization.

121100200187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

The spelling of 121100200187 in words is "one hundred twenty-one billion, one hundred million, two hundred thousand, one hundred eighty-seven".