20123221003320 has 64 divisors (see below), whose sum is σ = 60369962580000. Its totient is φ = 5366165639168.

The previous prime is 20123221003267. The next prime is 20123221003363. The reversal of 20123221003320 is 2330012232102.

It is a happy number.

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 15 ways as a sum of consecutive naturals, for example, 40849036 + ... + 41338724.

Almost surely, 2^{20123221003320} is an apocalyptic number.

20123221003320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20123221003320 is an abundant number, since it is smaller than the sum of its proper divisors (40246741576680).

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

20123221003320 is a wasteful number, since it uses less digits than its factorization.

20123221003320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832152 (or 832148 counting only the distinct ones).

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

Adding to 20123221003320 its reverse (2330012232102), we get a palindrome (22453233235422).

The spelling of 20123221003320 in words is "twenty trillion, one hundred twenty-three billion, two hundred twenty-one million, three thousand, three hundred twenty".