2031322021220 has 96 divisors (see below), whose sum is σ = 4563963169920. Its totient is φ = 756739942400.

The previous prime is 2031322021219. The next prime is 2031322021331. The reversal of 2031322021220 is 221202231302.

It is a happy number.

It is a super-2 number, since 2×2031322021220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2031322021192 and 2031322021201.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65470871 + ... + 65501889.

It is an arithmetic number, because the mean of its divisors is an integer number (47541283020).

Almost surely, 2^{2031322021220} is an apocalyptic number.

2031322021220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2031322021220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2281981584960).

2031322021220 is an abundant number, since it is smaller than the sum of its proper divisors (2532641148700).

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

2031322021220 is a wasteful number, since it uses less digits than its factorization.

2031322021220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33053 (or 33051 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2031322021220 its reverse (221202231302), we get a palindrome (2252524252522).

The spelling of 2031322021220 in words is "two trillion, thirty-one billion, three hundred twenty-two million, twenty-one thousand, two hundred twenty".