21033110022 has 32 divisors (see below), whose sum is σ = 44652982752. Its totient is φ = 6581988864.

The previous prime is 21033110011. The next prime is 21033110023. The reversal of 21033110022 is 22001133012.

It is a junction number, because it is equal to n+sod(n) for n = 21033109983 and 21033110010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21033110023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219213 + ... + 300200.

It is an arithmetic number, because the mean of its divisors is an integer number (1395405711).

Almost surely, 2^21033110022 is an apocalyptic number.

21033110022 is an abundant number, since it is smaller than the sum of its proper divisors (23619872730).

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

21033110022 is a wasteful number, since it uses less digits than its factorization.

21033110022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519832.

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

Adding to 21033110022 its reverse (22001133012), we get a palindrome (43034243034).

The spelling of 21033110022 in words is "twenty-one billion, thirty-three million, one hundred ten thousand, twenty-two".