121204019 has 2 divisors, whose sum is σ = 121204020. Its totient is φ = 121204018.

The previous prime is 121204001. The next prime is 121204051. The reversal of 121204019 is 910402121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121204019 - 2²⁰ = 120155443 is a prime.

It is a super-3 number, since 3×121204019³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (121204219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60602009 + 60602010.

It is an arithmetic number, because the mean of its divisors is an integer number (60602010).

Almost surely, 2^121204019 is an apocalyptic number.

121204019 is a deficient number, since it is larger than the sum of its proper divisors (1).

121204019 is an equidigital number, since it uses as much as digits as its factorization.

121204019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 121204019 is about 11009.2696851335. The cubic root of 121204019 is about 494.8865760595.

The spelling of 121204019 in words is "one hundred twenty-one million, two hundred four thousand, nineteen".