21022100330 has 64 divisors (see below), whose sum is σ = 47289657600. Its totient is φ = 6536678400.

The previous prime is 21022100317. The next prime is 21022100387. The reversal of 21022100330 is 3300122012.

It is a happy number.

It is a super-2 number, since 2×21022100330² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 291746 + ... + 356594.

It is an arithmetic number, because the mean of its divisors is an integer number (738900900).

Almost surely, 2^21022100330 is an apocalyptic number.

21022100330 is an abundant number, since it is smaller than the sum of its proper divisors (26267557270).

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

21022100330 is a wasteful number, since it uses less digits than its factorization.

21022100330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65295.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 21022100330 its reverse (3300122012), we get a palindrome (24322222342).

The spelling of 21022100330 in words is "twenty-one billion, twenty-two million, one hundred thousand, three hundred thirty".