20292101 has 4 divisors (see below), whose sum is σ = 21485772. Its totient is φ = 19098432.

The previous prime is 20292079. The next prime is 20292113. The reversal of 20292101 is 10129202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10129202 = 2 ⋅5064601.

It can be written as a sum of positive squares in 2 ways, for example, as 11730625 + 8561476 = 3425^2 + 2926^2 .

It is a cyclic number.

It is not a de Polignac number, because 20292101 - 2⁶ = 20292037 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 1193653 = 20292101 / (2 + 0 + 2 + 9 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20292101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20292131) 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, 596810 + ... + 596843.

It is an arithmetic number, because the mean of its divisors is an integer number (5371443).

Almost surely, 2^20292101 is an apocalyptic number.

It is an amenable number.

20292101 is a deficient number, since it is larger than the sum of its proper divisors (1193671).

20292101 is a wasteful number, since it uses less digits than its factorization.

20292101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1193670.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 20292101 is about 4504.6754600082. The cubic root of 20292101 is about 272.7568534615.

The spelling of 20292101 in words is "twenty million, two hundred ninety-two thousand, one hundred one".