121950286187 has 2 divisors, whose sum is σ = 121950286188. Its totient is φ = 121950286186.

The previous prime is 121950286153. The next prime is 121950286201. The reversal of 121950286187 is 781682059121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121950286187 - 2³⁰ = 120876544363 is a prime.

It is not a weakly prime, because it can be changed into another prime (121950286987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60975143093 + 60975143094.

It is an arithmetic number, because the mean of its divisors is an integer number (60975143094).

Almost surely, 2^121950286187 is an apocalyptic number.

121950286187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121950286187 is an equidigital number, since it uses as much as digits as its factorization.

121950286187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 50.

The spelling of 121950286187 in words is "one hundred twenty-one billion, nine hundred fifty million, two hundred eighty-six thousand, one hundred eighty-seven".