121001010187 has 2 divisors, whose sum is σ = 121001010188. Its totient is φ = 121001010186.

The previous prime is 121001010173. The next prime is 121001010227. The reversal of 121001010187 is 781010100121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121001010187 is a prime.

It is not a weakly prime, because it can be changed into another prime (121001010157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500505093 + 60500505094.

It is an arithmetic number, because the mean of its divisors is an integer number (60500505094).

Almost surely, 2^121001010187 is an apocalyptic number.

121001010187 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001010187 is an equidigital number, since it uses as much as digits as its factorization.

121001010187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112, while the sum is 22.

The spelling of 121001010187 in words is "one hundred twenty-one billion, one million, ten thousand, one hundred eighty-seven".