21033243022 has 16 divisors (see below), whose sum is σ = 34722622512. Its totient is φ = 9475957120.

The previous prime is 21033243001. The next prime is 21033243037. The reversal of 21033243022 is 22034233012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 21033242984 and 21033243002.

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 in 7 ways as a sum of consecutive naturals, for example, 4227853 + ... + 4232824.

It is an arithmetic number, because the mean of its divisors is an integer number (2170163907).

Almost surely, 2^21033243022 is an apocalyptic number.

21033243022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21033243022 is a deficient number, since it is larger than the sum of its proper divisors (13689379490).

21033243022 is a wasteful number, since it uses less digits than its factorization.

21033243022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8460803.

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21033243022 its reverse (22034233012), we get a palindrome (43067476034).

The spelling of 21033243022 in words is "twenty-one billion, thirty-three million, two hundred forty-three thousand, twenty-two".