21012302230033 has 4 divisors (see below), whose sum is σ = 21012314829120. Its totient is φ = 21012289630948.

The previous prime is 21012302230019. The next prime is 21012302230093. The reversal of 21012302230033 is 33003220321012.

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 21012302230033 - 2⁵ = 21012302230001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21012302229986 and 21012302230013.

It is not an unprimeable number, because it can be changed into a prime (21012302230093) 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, 3331885 + ... + 7288762.

It is an arithmetic number, because the mean of its divisors is an integer number (5253078707280).

Almost surely, 2^{21012302230033} is an apocalyptic number.

It is an amenable number.

21012302230033 is a deficient number, since it is larger than the sum of its proper divisors (12599087).

21012302230033 is a wasteful number, since it uses less digits than its factorization.

21012302230033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12599086.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 21012302230033 its reverse (33003220321012), we get a palindrome (54015522551045).

The spelling of 21012302230033 in words is "twenty-one trillion, twelve billion, three hundred two million, two hundred thirty thousand, thirty-three".