20331113021220 has 24 divisors (see below), whose sum is σ = 56927116459584. Its totient is φ = 5421630138976.

The previous prime is 20331113021101. The next prime is 20331113021231. The reversal of 20331113021220 is 2212031113302.

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, 169425941784 + ... + 169425941903.

It is an arithmetic number, because the mean of its divisors is an integer number (2371963185816).

Almost surely, 2^{20331113021220} is an apocalyptic number.

20331113021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20331113021220 is an abundant number, since it is smaller than the sum of its proper divisors (36596003438364).

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

20331113021220 is a wasteful number, since it uses less digits than its factorization.

20331113021220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338851883699 (or 338851883697 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20331113021220 its reverse (2212031113302), we get a palindrome (22543144134522).

The spelling of 20331113021220 in words is "twenty trillion, three hundred thirty-one billion, one hundred thirteen million, twenty-one thousand, two hundred twenty".