21033051022 has 4 divisors (see below), whose sum is σ = 31549576536. Its totient is φ = 10516525510.

The previous prime is 21033051019. The next prime is 21033051101. The reversal of 21033051022 is 22015033012.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5258262754 + ... + 5258262757.

It is an arithmetic number, because the mean of its divisors is an integer number (7887394134).

Almost surely, 2^21033051022 is an apocalyptic number.

21033051022 is a deficient number, since it is larger than the sum of its proper divisors (10516525514).

21033051022 is a wasteful number, since it uses less digits than its factorization.

21033051022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10516525513.

The product of its (nonzero) digits is 360, while the sum is 19.

Adding to 21033051022 its reverse (22015033012), we get a palindrome (43048084034).

The spelling of 21033051022 in words is "twenty-one billion, thirty-three million, fifty-one thousand, twenty-two".