2331201021220 has 48 divisors (see below), whose sum is σ = 5109477262848. Its totient is φ = 891744613760.

The previous prime is 2331201021211. The next prime is 2331201021223. The reversal of 2331201021220 is 221201021332.

It is not an unprimeable number, because it can be changed into a prime (2331201021223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586565 + ... + 2679475.

It is an arithmetic number, because the mean of its divisors is an integer number (106447442976).

Almost surely, 2^{2331201021220} is an apocalyptic number.

2331201021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2331201021220 is an abundant number, since it is smaller than the sum of its proper divisors (2778276241628).

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

2331201021220 is a wasteful number, since it uses less digits than its factorization.

2331201021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1097580 (or 1097578 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2331201021220 its reverse (221201021332), we get a palindrome (2552402042552).

The spelling of 2331201021220 in words is "two trillion, three hundred thirty-one billion, two hundred one million, twenty-one thousand, two hundred twenty".