20119901 has 4 divisors (see below), whose sum is σ = 20548032. Its totient is φ = 19691772.

The previous prime is 20119877. The next prime is 20119903. The reversal of 20119901 is 10991102.

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.

It is a cyclic number.

It is not a de Polignac number, because 20119901 - 2¹⁰ = 20118877 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20119903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213995 + ... + 214088.

It is an arithmetic number, because the mean of its divisors is an integer number (5137008).

Almost surely, 2^20119901 is an apocalyptic number.

It is an amenable number.

20119901 is a deficient number, since it is larger than the sum of its proper divisors (428131).

20119901 is an equidigital number, since it uses as much as digits as its factorization.

20119901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428130.

The product of its (nonzero) digits is 162, while the sum is 23.

The square root of 20119901 is about 4485.5212629080. The cubic root of 20119901 is about 271.9831169235.

It can be divided in two parts, 201 and 19901, that added together give a palindrome (20102).

The spelling of 20119901 in words is "twenty million, one hundred nineteen thousand, nine hundred one".