121033987 has 2 divisors, whose sum is σ = 121033988. Its totient is φ = 121033986.

The previous prime is 121033963. The next prime is 121034051. The reversal of 121033987 is 789330121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121033987 is a prime.

It is not a weakly prime, because it can be changed into another prime (121033937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516993 + 60516994.

It is an arithmetic number, because the mean of its divisors is an integer number (60516994).

Almost surely, 2^121033987 is an apocalyptic number.

121033987 is a deficient number, since it is larger than the sum of its proper divisors (1).

121033987 is an equidigital number, since it uses as much as digits as its factorization.

121033987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 121033987 is about 11001.5447551696. The cubic root of 121033987 is about 494.6550492663.

The spelling of 121033987 in words is "one hundred twenty-one million, thirty-three thousand, nine hundred eighty-seven".