121004999 has 2 divisors, whose sum is σ = 121005000. Its totient is φ = 121004998.

The previous prime is 121004959. The next prime is 121005013. The reversal of 121004999 is 999400121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121004999 - 2²⁰ = 119956423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121004959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502499 + 60502500.

It is an arithmetic number, because the mean of its divisors is an integer number (60502500).

Almost surely, 2^121004999 is an apocalyptic number.

121004999 is a deficient number, since it is larger than the sum of its proper divisors (1).

121004999 is an equidigital number, since it uses as much as digits as its factorization.

121004999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 35.

The square root of 121004999 is about 11000.2272249259. The cubic root of 121004999 is about 494.6155556611.

The spelling of 121004999 in words is "one hundred twenty-one million, four thousand, nine hundred ninety-nine".