21120020322 has 16 divisors (see below), whose sum is σ = 42242806272. Its totient is φ = 7039545840.

The previous prime is 21120020281. The next prime is 21120020333. The reversal of 21120020322 is 22302002112.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8329 + ... + 205692.

It is an arithmetic number, because the mean of its divisors is an integer number (2640175392).

Almost surely, 2^21120020322 is an apocalyptic number.

21120020322 is an abundant number, since it is smaller than the sum of its proper divisors (21122785950).

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

21120020322 is a wasteful number, since it uses less digits than its factorization.

21120020322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230473.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21120020322 its reverse (22302002112), we get a palindrome (43422022434).

The spelling of 21120020322 in words is "twenty-one billion, one hundred twenty million, twenty thousand, three hundred twenty-two".