21030022133 has 8 divisors (see below), whose sum is σ = 21791899800. Its totient is φ = 20270591488.

The previous prime is 21030022093. The next prime is 21030022157. The reversal of 21030022133 is 33122003012.

It can be written as a sum of positive squares in 4 ways, for example, as 226863844 + 20803158289 = 15062^2 + 144233^2 .

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 21030022133 - 2²⁰ = 21028973557 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 (21030022633) 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, 594248 + ... + 628641.

It is an arithmetic number, because the mean of its divisors is an integer number (2723987475).

Almost surely, 2^21030022133 is an apocalyptic number.

It is an amenable number.

21030022133 is a deficient number, since it is larger than the sum of its proper divisors (761877667).

21030022133 is a wasteful number, since it uses less digits than its factorization.

21030022133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223511.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21030022133 its reverse (33122003012), we get a palindrome (54152025145).

The spelling of 21030022133 in words is "twenty-one billion, thirty million, twenty-two thousand, one hundred thirty-three".