103121230100 has 54 divisors (see below), whose sum is σ = 260307460350. Its totient is φ = 35355848640.

The previous prime is 103121230049. The next prime is 103121230103. The reversal of 103121230100 is 1032121301.

It can be written as a sum of positive squares in 3 ways, for example, as 1107425284 + 102013804816 = 33278^2 + 319396^2 .

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121230103) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10517675 + ... + 10527474.

It is an arithmetic number, because the mean of its divisors is an integer number (4820508525).

Almost surely, 2^103121230100 is an apocalyptic number.

103121230100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103121230100 is an abundant number, since it is smaller than the sum of its proper divisors (157186230250).

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

103121230100 is a wasteful number, since it uses less digits than its factorization.

103121230100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21045177 (or 21045163 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 103121230100 its reverse (1032121301), we get a palindrome (104153351401).

The spelling of 103121230100 in words is "one hundred three billion, one hundred twenty-one million, two hundred thirty thousand, one hundred".