20880101 has 8 divisors (see below), whose sum is σ = 22811808. Its totient is φ = 18954000.

The previous prime is 20880077. The next prime is 20880103. The reversal of 20880101 is 10108802.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20880101 - 2²² = 16685797 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 (20880103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12071 + ... + 13691.

It is an arithmetic number, because the mean of its divisors is an integer number (2851476).

Almost surely, 2^20880101 is an apocalyptic number.

It is an amenable number.

20880101 is a deficient number, since it is larger than the sum of its proper divisors (1931707).

20880101 is a wasteful number, since it uses less digits than its factorization.

20880101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2803.

The product of its (nonzero) digits is 128, while the sum is 20.

The square root of 20880101 is about 4569.4749151297. The cubic root of 20880101 is about 275.3663481072.

Adding to 20880101 its reverse (10108802), we get a palindrome (30988903).

The spelling of 20880101 in words is "twenty million, eight hundred eighty thousand, one hundred one".