120103231212 has 144 divisors (see below), whose sum is σ = 315933115680. Its totient is φ = 38437825536.

The previous prime is 120103231163. The next prime is 120103231277. The reversal of 120103231212 is 212132301021.

120103231212 is a `hidden beast` number, since 120 + 10 + 323 + 1 + 212 = 666.

It is a super-2 number, since 2×120103231212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 107522478 + ... + 107523594.

It is an arithmetic number, because the mean of its divisors is an integer number (2193979970).

Almost surely, 2^120103231212 is an apocalyptic number.

120103231212 is a gapful number since it is divisible by the number (12) 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 120103231212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157966557840).

120103231212 is an abundant number, since it is smaller than the sum of its proper divisors (195829884468).

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

120103231212 is a wasteful number, since it uses less digits than its factorization.

120103231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2160 (or 2155 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 120103231212 its reverse (212132301021), we get a palindrome (332235532233).

The spelling of 120103231212 in words is "one hundred twenty billion, one hundred three million, two hundred thirty-one thousand, two hundred twelve".