21011033022 has 16 divisors (see below), whose sum is σ = 48025218432. Its totient is φ = 6003152280.

The previous prime is 21011033011. The next prime is 21011033041. The reversal of 21011033022 is 22033011012.

It is a junction number, because it is equal to n+sod(n) for n = 21011032992 and 21011033010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 250131304 + ... + 250131387.

It is an arithmetic number, because the mean of its divisors is an integer number (3001576152).

Almost surely, 2^21011033022 is an apocalyptic number.

21011033022 is an abundant number, since it is smaller than the sum of its proper divisors (27014185410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21011033022 is a wasteful number, since it uses less digits than its factorization.

21011033022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500262703.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 21011033022 its reverse (22033011012), we get a palindrome (43044044034).

The spelling of 21011033022 in words is "twenty-one billion, eleven million, thirty-three thousand, twenty-two".