21020541113 has 8 divisors (see below), whose sum is σ = 24695461056. Its totient is φ = 17639614800.

The previous prime is 21020541103. The next prime is 21020541119. The reversal of 21020541113 is 31114502012.

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 21020541113 - 2⁴ = 21020541097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21020541119) 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, 73498253 + ... + 73498538.

It is an arithmetic number, because the mean of its divisors is an integer number (3086932632).

Almost surely, 2^21020541113 is an apocalyptic number.

It is an amenable number.

21020541113 is a deficient number, since it is larger than the sum of its proper divisors (3674919943).

21020541113 is a wasteful number, since it uses less digits than its factorization.

21020541113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146996815.

The product of its (nonzero) digits is 240, while the sum is 20.

The spelling of 21020541113 in words is "twenty-one billion, twenty million, five hundred forty-one thousand, one hundred thirteen".