7103121372 has 72 divisors (see below), whose sum is σ = 18803060640. Its totient is φ = 2256629760.

The previous prime is 7103121343. The next prime is 7103121397. The reversal of 7103121372 is 2731213017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 217404 + ... + 247932.

It is an arithmetic number, because the mean of its divisors is an integer number (261153620).

Almost surely, 2^7103121372 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7103121372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9401530320).

7103121372 is an abundant number, since it is smaller than the sum of its proper divisors (11699939268).

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

7103121372 is a wasteful number, since it uses less digits than its factorization.

7103121372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30843 (or 30838 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 7103121372 is about 84280.0176317020. The cubic root of 7103121372 is about 1922.2789573170.

Adding to 7103121372 its reverse (2731213017), we get a palindrome (9834334389).

The spelling of 7103121372 in words is "seven billion, one hundred three million, one hundred twenty-one thousand, three hundred seventy-two".