21000212322133 has 4 divisors (see below), whose sum is σ = 22909322533248. Its totient is φ = 19091102111020.

The previous prime is 21000212322119. The next prime is 21000212322149. The reversal of 21000212322133 is 33122321200012.

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 not a de Polignac number, because 21000212322133 - 2⁵ = 21000212322101 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 (21000212322113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 954555105541 + ... + 954555105562.

It is an arithmetic number, because the mean of its divisors is an integer number (5727330633312).

Almost surely, 2^{21000212322133} is an apocalyptic number.

It is an amenable number.

21000212322133 is a deficient number, since it is larger than the sum of its proper divisors (1909110211115).

21000212322133 is a wasteful number, since it uses less digits than its factorization.

21000212322133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909110211114.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 21000212322133 its reverse (33122321200012), we get a palindrome (54122533522145).

The spelling of 21000212322133 in words is "twenty-one trillion, two hundred twelve million, three hundred twenty-two thousand, one hundred thirty-three".