1203012120 has 32 divisors (see below), whose sum is σ = 3609036720. Its totient is φ = 320803200.

The previous prime is 1203012101. The next prime is 1203012137. The reversal of 1203012120 is 212103021.

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

It is a junction number, because it is equal to n+sod(n) for n = 1203012096 and 1203012105.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5012431 + ... + 5012670.

Almost surely, 2^1203012120 is an apocalyptic number.

1203012120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1203012120 is an abundant number, since it is smaller than the sum of its proper divisors (2406024600).

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

1203012120 is a wasteful number, since it uses less digits than its factorization.

1203012120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10025115 (or 10025111 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1203012120 is about 34684.4651104785. The cubic root of 1203012120 is about 1063.5469527110.

Adding to 1203012120 its reverse (212103021), we get a palindrome (1415115141).

Subtracting from 1203012120 its reverse (212103021), we obtain a palindrome (990909099).

The spelling of 1203012120 in words is "one billion, two hundred three million, twelve thousand, one hundred twenty".