21010213200133 has 4 divisors (see below), whose sum is σ = 21040974859968. Its totient is φ = 20979451540300.

The previous prime is 21010213200073. The next prime is 21010213200161. The reversal of 21010213200133 is 33100231201012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21010213200133 is a prime.

It is a super-2 number, since 2×21010213200133² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21010213200133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010213200433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15380828893 + ... + 15380830258.

It is an arithmetic number, because the mean of its divisors is an integer number (5260243714992).

Almost surely, 2^{21010213200133} is an apocalyptic number.

It is an amenable number.

21010213200133 is a deficient number, since it is larger than the sum of its proper divisors (30761659835).

21010213200133 is an equidigital number, since it uses as much as digits as its factorization.

21010213200133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30761659834.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21010213200133 its reverse (33100231201012), we get a palindrome (54110444401145).

The spelling of 21010213200133 in words is "twenty-one trillion, ten billion, two hundred thirteen million, two hundred thousand, one hundred thirty-three".