190203201321 has 16 divisors (see below), whose sum is σ = 289845811584. Its totient is φ = 108682907904.

The previous prime is 190203201301. The next prime is 190203201329. The reversal of 190203201321 is 123102302091.

190203201321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 190203201321 - 2⁷ = 190203201193 is a prime.

It is a super-2 number, since 2×190203201321² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 190203201291 and 190203201300.

It is not an unprimeable number, because it can be changed into a prime (190203201329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345915 + ... + 707151.

It is an arithmetic number, because the mean of its divisors is an integer number (18115363224).

Almost surely, 2^190203201321 is an apocalyptic number.

It is an amenable number.

190203201321 is a deficient number, since it is larger than the sum of its proper divisors (99642610263).

190203201321 is a wasteful number, since it uses less digits than its factorization.

190203201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386320.

The product of its (nonzero) digits is 648, while the sum is 24.

The spelling of 190203201321 in words is "one hundred ninety billion, two hundred three million, two hundred one thousand, three hundred twenty-one".