20192101 has 4 divisors (see below), whose sum is σ = 20534400. Its totient is φ = 19849804.

The previous prime is 20192087. The next prime is 20192119. The reversal of 20192101 is 10129102.

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, and also an emirpimes, since its reverse is a distinct semiprime: 10129102 = 2 ⋅5064551.

It is a cyclic number.

It is not a de Polignac number, because 20192101 - 2¹⁵ = 20159333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20192171) 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, 171061 + ... + 171178.

It is an arithmetic number, because the mean of its divisors is an integer number (5133600).

Almost surely, 2^20192101 is an apocalyptic number.

It is an amenable number.

20192101 is a deficient number, since it is larger than the sum of its proper divisors (342299).

20192101 is an equidigital number, since it uses as much as digits as its factorization.

20192101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342298.

The product of its (nonzero) digits is 36, while the sum is 16.

The square root of 20192101 is about 4493.5621727089. The cubic root of 20192101 is about 272.3080644884.

The spelling of 20192101 in words is "twenty million, one hundred ninety-two thousand, one hundred one".