120103121100 has 144 divisors (see below), whose sum is σ = 375674566400. Its totient is φ = 29521739520.

The previous prime is 120103121093. The next prime is 120103121107. The reversal of 120103121100 is 1121301021.

It is an interprime number because it is at equal distance from previous prime (120103121093) and next prime (120103121107).

It is a super-2 number, since 2×120103121100² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (120103121107) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73840 + ... + 495639.

Almost surely, 2^120103121100 is an apocalyptic number.

120103121100 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 120103121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187837283200).

120103121100 is an abundant number, since it is smaller than the sum of its proper divisors (255571445300).

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

120103121100 is a wasteful number, since it uses less digits than its factorization.

120103121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569552 (or 569545 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 120103121100 its reverse (1121301021), we get a palindrome (121224422121).

The spelling of 120103121100 in words is "one hundred twenty billion, one hundred three million, one hundred twenty-one thousand, one hundred".