103211031220 has 96 divisors (see below), whose sum is σ = 252465776640. Its totient is φ = 35064543360.

The previous prime is 103211031199. The next prime is 103211031221. The reversal of 103211031220 is 22130112301.

It is a junction number, because it is equal to n+sod(n) for n = 103211031194 and 103211031203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103211031221) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 19600 + ... + 454759.

It is an arithmetic number, because the mean of its divisors is an integer number (2629851840).

Almost surely, 2^103211031220 is an apocalyptic number.

103211031220 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 103211031220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126232888320).

103211031220 is an abundant number, since it is smaller than the sum of its proper divisors (149254745420).

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

103211031220 is a wasteful number, since it uses less digits than its factorization.

103211031220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474445 (or 474443 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 103211031220 its reverse (22130112301), we get a palindrome (125341143521).

The spelling of 103211031220 in words is "one hundred three billion, two hundred eleven million, thirty-one thousand, two hundred twenty".