1203113122 has 4 divisors (see below), whose sum is σ = 1804669686. Its totient is φ = 601556560.

The previous prime is 1203113113. The next prime is 1203113123. The reversal of 1203113122 is 2213113021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 877996161 + 325116961 = 29631^2 + 18031^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1203113096 and 1203113105.

It is not an unprimeable number, because it can be changed into a prime (1203113123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300778279 + ... + 300778282.

Almost surely, 2^1203113122 is an apocalyptic number.

1203113122 is a deficient number, since it is larger than the sum of its proper divisors (601556564).

1203113122 is an equidigital number, since it uses as much as digits as its factorization.

1203113122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601556563.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1203113122 is about 34685.9210919935. The cubic root of 1203113122 is about 1063.5767161583.

Adding to 1203113122 its reverse (2213113021), we get a palindrome (3416226143).

The spelling of 1203113122 in words is "one billion, two hundred three million, one hundred thirteen thousand, one hundred twenty-two".