21013133101 has 16 divisors (see below), whose sum is σ = 22480070400. Its totient is φ = 19572876288.

The previous prime is 21013133083. The next prime is 21013133131. The reversal of 21013133101 is 10133131012.

It is not a de Polignac number, because 21013133101 - 2⁵ = 21013133069 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 (21013133131) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 646405 + ... + 678133.

It is an arithmetic number, because the mean of its divisors is an integer number (1405004400).

Almost surely, 2^21013133101 is an apocalyptic number.

It is an amenable number.

21013133101 is a deficient number, since it is larger than the sum of its proper divisors (1466937299).

21013133101 is a wasteful number, since it uses less digits than its factorization.

21013133101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32148.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 21013133101 its reverse (10133131012), we get a palindrome (31146264113).

The spelling of 21013133101 in words is "twenty-one billion, thirteen million, one hundred thirty-three thousand, one hundred one".