19021102121 has 8 divisors (see below), whose sum is σ = 21742294464. Its totient is φ = 16300882800.

The previous prime is 19021102019. The next prime is 19021102123. The reversal of 19021102121 is 12120112091.

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

It is a cyclic number.

It is not a de Polignac number, because 19021102121 - 2¹⁴ = 19021085737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19021102093 and 19021102102.

It is not an unprimeable number, because it can be changed into a prime (19021102123) 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, 200870 + ... + 279983.

It is an arithmetic number, because the mean of its divisors is an integer number (2717786808).

Almost surely, 2^19021102121 is an apocalyptic number.

It is an amenable number.

19021102121 is a deficient number, since it is larger than the sum of its proper divisors (2721192343).

19021102121 is an equidigital number, since it uses as much as digits as its factorization.

19021102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486511.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 19021102121 in words is "nineteen billion, twenty-one million, one hundred two thousand, one hundred twenty-one".