21210322033020 has 96 divisors (see below), whose sum is σ = 63694154926080. Its totient is φ = 5257295297280.

The previous prime is 21210322032937. The next prime is 21210322033037. The reversal of 21210322033020 is 2033022301212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175463596 + ... + 175584435.

It is an arithmetic number, because the mean of its divisors is an integer number (663480780480).

Almost surely, 2^{21210322033020} is an apocalyptic number.

21210322033020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21210322033020 is an abundant number, since it is smaller than the sum of its proper divisors (42483832893060).

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

21210322033020 is a wasteful number, since it uses less digits than its factorization.

21210322033020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351048115 (or 351048113 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 21210322033020 its reverse (2033022301212), we get a palindrome (23243344334232).

The spelling of 21210322033020 in words is "twenty-one trillion, two hundred ten billion, three hundred twenty-two million, thirty-three thousand, twenty".