19014124121 has 4 divisors (see below), whose sum is σ = 19047897552. Its totient is φ = 18980350692.

The previous prime is 19014124117. The next prime is 19014124187. The reversal of 19014124121 is 12142141091.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 19014124121 - 2² = 19014124117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19014174121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16885871 + ... + 16886996.

It is an arithmetic number, because the mean of its divisors is an integer number (4761974388).

Almost surely, 2^19014124121 is an apocalyptic number.

It is an amenable number.

19014124121 is a deficient number, since it is larger than the sum of its proper divisors (33773431).

19014124121 is an equidigital number, since it uses as much as digits as its factorization.

19014124121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33773430.

The product of its (nonzero) digits is 576, while the sum is 26.

The spelling of 19014124121 in words is "nineteen billion, fourteen million, one hundred twenty-four thousand, one hundred twenty-one".