21022033334 has 4 divisors (see below), whose sum is σ = 31533050004. Its totient is φ = 10511016666.

The previous prime is 21022033303. The next prime is 21022033337. The reversal of 21022033334 is 43333022012.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21022033337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5255508332 + ... + 5255508335.

It is an arithmetic number, because the mean of its divisors is an integer number (7883262501).

Almost surely, 2^21022033334 is an apocalyptic number.

21022033334 is a deficient number, since it is larger than the sum of its proper divisors (10511016670).

21022033334 is a wasteful number, since it uses less digits than its factorization.

21022033334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10511016669.

The product of its (nonzero) digits is 2592, while the sum is 23.

Adding to 21022033334 its reverse (43333022012), we get a palindrome (64355055346).

The spelling of 21022033334 in words is "twenty-one billion, twenty-two million, thirty-three thousand, three hundred thirty-four".