21202013013 has 8 divisors (see below), whose sum is σ = 29244156000. Its totient is φ = 13647272688.

The previous prime is 21202012991. The next prime is 21202013017. The reversal of 21202013013 is 31031020212.

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

It is not a de Polignac number, because 21202013013 - 2⁹ = 21202012501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21202012983 and 21202013001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202013017) 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, 121850563 + ... + 121850736.

It is an arithmetic number, because the mean of its divisors is an integer number (3655519500).

Almost surely, 2^21202013013 is an apocalyptic number.

It is an amenable number.

21202013013 is a deficient number, since it is larger than the sum of its proper divisors (8042142987).

21202013013 is a wasteful number, since it uses less digits than its factorization.

21202013013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243701331.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21202013013 its reverse (31031020212), we get a palindrome (52233033225).

The spelling of 21202013013 in words is "twenty-one billion, two hundred two million, thirteen thousand, thirteen".