1043031101220 has 144 divisors (see below), whose sum is σ = 3350775577968. Its totient is φ = 261717442560.

The previous prime is 1043031101209. The next prime is 1043031101249. The reversal of 1043031101220 is 221011303401.

1043031101220 is a `hidden beast` number, since 1 + 0 + 430 + 3 + 1 + 10 + 1 + 220 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 30061317924 + 1012969783296 = 173382^2 + 1006464^2 .

It is a super-2 number, since 2×1043031101220² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1043031101193 and 1043031101202.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13416060 + ... + 13493580.

It is an arithmetic number, because the mean of its divisors is an integer number (23269274847).

Almost surely, 2^{1043031101220} is an apocalyptic number.

1043031101220 is a gapful number since it is divisible by the number (10) 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 1043031101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1675387788984).

1043031101220 is an abundant number, since it is smaller than the sum of its proper divisors (2307744476748).

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

1043031101220 is a wasteful number, since it uses less digits than its factorization.

1043031101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81950 (or 81945 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1043031101220 its reverse (221011303401), we get a palindrome (1264042404621).

The spelling of 1043031101220 in words is "one trillion, forty-three billion, thirty-one million, one hundred one thousand, two hundred twenty".