121019019 has 8 divisors (see below), whose sum is σ = 176027712. Its totient is φ = 73344840.

The previous prime is 121019011. The next prime is 121019021. The reversal of 121019019 is 910910121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 121019019 - 2³ = 121019011 is a prime.

It is a super-2 number, since 2×121019019² = 29291205919444722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121019019.

It is not an unprimeable number, because it can be changed into a prime (121019011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1833589 + ... + 1833654.

It is an arithmetic number, because the mean of its divisors is an integer number (22003464).

Almost surely, 2^121019019 is an apocalyptic number.

121019019 is a deficient number, since it is larger than the sum of its proper divisors (55008693).

121019019 is a wasteful number, since it uses less digits than its factorization.

121019019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3667257.

The product of its (nonzero) digits is 162, while the sum is 24.

The square root of 121019019 is about 11000.8644660317. The cubic root of 121019019 is about 494.6346574678.

The spelling of 121019019 in words is "one hundred twenty-one million, nineteen thousand, nineteen".