20130221322320 has 40 divisors (see below), whose sum is σ = 46803177842400. Its totient is φ = 8052017429120.

The previous prime is 20130221322271. The next prime is 20130221322413. The reversal of 20130221322320 is 2322312203102.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent 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, 8524835 + ... + 10627005.

It is an arithmetic number, because the mean of its divisors is an integer number (1170079446060).

Almost surely, 2^{20130221322320} is an apocalyptic number.

20130221322320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20130221322320 is an abundant number, since it is smaller than the sum of its proper divisors (26672956520080).

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

20130221322320 is a wasteful number, since it uses less digits than its factorization.

20130221322320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2221883 (or 2221877 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 20130221322320 its reverse (2322312203102), we get a palindrome (22452533525422).

The spelling of 20130221322320 in words is "twenty trillion, one hundred thirty billion, two hundred twenty-one million, three hundred twenty-two thousand, three hundred twenty".