103031221000 has 64 divisors (see below), whose sum is σ = 241218460080. Its totient is φ = 41191052800.

The previous prime is 103031220937. The next prime is 103031221031. The reversal of 103031221000 is 122130301.

It can be written as a sum of positive squares in 8 ways, for example, as 5075992516 + 97955228484 = 71246^2 + 312978^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1971204 + ... + 2022796.

Almost surely, 2^103031221000 is an apocalyptic number.

103031221000 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 103031221000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (120609230040).

103031221000 is an abundant number, since it is smaller than the sum of its proper divisors (138187239080).

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

103031221000 is a wasteful number, since it uses less digits than its factorization.

103031221000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53611 (or 53597 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 103031221000 its reverse (122130301), we get a palindrome (103153351301).

The spelling of 103031221000 in words is "one hundred three billion, thirty-one million, two hundred twenty-one thousand".