21022001220032 has 28 divisors (see below), whose sum is σ = 42842980531800. Its totient is φ = 10226919511296.

The previous prime is 21022001219983. The next prime is 21022001220049. The reversal of 21022001220032 is 23002210022012.

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 3 ways as a sum of consecutive naturals, for example, 4438764782 + ... + 4438769517.

Almost surely, 2^{21022001220032} is an apocalyptic number.

It is an amenable number.

21022001220032 is an abundant number, since it is smaller than the sum of its proper divisors (21820979311768).

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

21022001220032 is an equidigital number, since it uses as much as digits as its factorization.

21022001220032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8877534348 (or 8877534338 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21022001220032 its reverse (23002210022012), we get a palindrome (44024211242044).

The spelling of 21022001220032 in words is "twenty-one trillion, twenty-two billion, one million, two hundred twenty thousand, thirty-two".