21000212313133 has 8 divisors (see below), whose sum is σ = 22186577940480. Its totient is φ = 19844661377520.

The previous prime is 21000212313127. The next prime is 21000212313211. The reversal of 21000212313133 is 33131321200012.

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 21000212313133 - 2⁹ = 21000212312621 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 (21000212313433) 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, 7703671533 + ... + 7703674258.

It is an arithmetic number, because the mean of its divisors is an integer number (2773322242560).

Almost surely, 2^{21000212313133} is an apocalyptic number.

It is an amenable number.

21000212313133 is a deficient number, since it is larger than the sum of its proper divisors (1186365627347).

21000212313133 is a wasteful number, since it uses less digits than its factorization.

21000212313133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15407345867.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 21000212313133 its reverse (33131321200012), we get a palindrome (54131533513145).

The spelling of 21000212313133 in words is "twenty-one trillion, two hundred twelve million, three hundred thirteen thousand, one hundred thirty-three".