21112020011213 has 8 divisors (see below), whose sum is σ = 22029989444736. Its totient is φ = 20194055204400.

The previous prime is 21112020011111. The next prime is 21112020011219. The reversal of 21112020011213 is 31211002021112.

It is a happy number.

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 21112020011213 - 2⁴⁰ = 20012508383437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21112020011191 and 21112020011200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112020011219) 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, 10795928 + ... + 12600638.

It is an arithmetic number, because the mean of its divisors is an integer number (2753748680592).

Almost surely, 2^{21112020011213} is an apocalyptic number.

21112020011213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

21112020011213 is a deficient number, since it is larger than the sum of its proper divisors (917969433523).

21112020011213 is a wasteful number, since it uses less digits than its factorization.

21112020011213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313355.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 21112020011213 its reverse (31211002021112), we get a palindrome (52323022032325).

The spelling of 21112020011213 in words is "twenty-one trillion, one hundred twelve billion, twenty million, eleven thousand, two hundred thirteen".