1203122112 has 84 divisors (see below), whose sum is σ = 3259973160. Its totient is φ = 391598592.

The previous prime is 1203122003. The next prime is 1203122117. The reversal of 1203122112 is 2112213021.

It is a junction number, because it is equal to n+sod(n) for n = 1203122091 and 1203122100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1203122117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 353314 + ... + 356702.

Almost surely, 2^1203122112 is an apocalyptic number.

1203122112 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 1203122112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1629986580).

1203122112 is an abundant number, since it is smaller than the sum of its proper divisors (2056851048).

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

1203122112 is an equidigital number, since it uses as much as digits as its factorization.

1203122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3437 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1203122112 is about 34686.0506832358. The cubic root of 1203122112 is about 1063.5793652666.

Adding to 1203122112 its reverse (2112213021), we get a palindrome (3315335133).

Subtracting 1203122112 from its reverse (2112213021), we obtain a palindrome (909090909).

It can be divided in two parts, 12031 and 22112, that added together give a palindrome (34143).

The spelling of 1203122112 in words is "one billion, two hundred three million, one hundred twenty-two thousand, one hundred twelve".