21022330022 has 4 divisors (see below), whose sum is σ = 31533495036. Its totient is φ = 10511165010.

The previous prime is 21022330009. The next prime is 21022330031. The reversal of 21022330022 is 22003322012.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255582504 + ... + 5255582507.

It is an arithmetic number, because the mean of its divisors is an integer number (7883373759).

Almost surely, 2^21022330022 is an apocalyptic number.

21022330022 is a deficient number, since it is larger than the sum of its proper divisors (10511165014).

21022330022 is a wasteful number, since it uses less digits than its factorization.

21022330022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511165013.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21022330022 its reverse (22003322012), we get a palindrome (43025652034).

The spelling of 21022330022 in words is "twenty-one billion, twenty-two million, three hundred thirty thousand, twenty-two".