1919192820201 has 20 divisors (see below), whose sum is σ = 2868196220032. Its totient is φ = 1278902306808.

The previous prime is 1919192820191. The next prime is 1919192820217. The reversal of 1919192820201 is 1020282919191.

It is not a de Polignac number, because 1919192820201 - 2⁵ = 1919192820169 is a prime.

It is a super-2 number, since 2×1919192820201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1919192810201) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4994845 + ... + 5365338.

Almost surely, 2^{1919192820201} is an apocalyptic number.

It is an amenable number.

1919192820201 is a deficient number, since it is larger than the sum of its proper divisors (949003399831).

1919192820201 is a wasteful number, since it uses less digits than its factorization.

1919192820201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10362482 (or 10362473 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 45.

The spelling of 1919192820201 in words is "one trillion, nine hundred nineteen billion, one hundred ninety-two million, eight hundred twenty thousand, two hundred one".