21002110013113 has 8 divisors (see below), whose sum is σ = 21574478509632. Its totient is φ = 20429991195696.

The previous prime is 21002110013107. The next prime is 21002110013147. The reversal of 21002110013113 is 31131001120012.

It is a happy number.

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

It is not a de Polignac number, because 21002110013113 - 2¹³ = 21002110004921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21002110013813) 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, 62249245 + ... + 62585722.

It is an arithmetic number, because the mean of its divisors is an integer number (2696809813704).

Almost surely, 2^{21002110013113} is an apocalyptic number.

It is an amenable number.

21002110013113 is a deficient number, since it is larger than the sum of its proper divisors (572368496519).

21002110013113 is a wasteful number, since it uses less digits than its factorization.

21002110013113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124839551.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 21002110013113 its reverse (31131001120012), we get a palindrome (52133111133125).

The spelling of 21002110013113 in words is "twenty-one trillion, two billion, one hundred ten million, thirteen thousand, one hundred thirteen".