1120121403 has 4 divisors (see below), whose sum is σ = 1493495208. Its totient is φ = 746747600.

The previous prime is 1120121399. The next prime is 1120121407. The reversal of 1120121403 is 3041210211.

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

It is an interprime number because it is at equal distance from previous prime (1120121399) and next prime (1120121407).

It is a cyclic number.

It is not a de Polignac number, because 1120121403 - 2² = 1120121399 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1120121407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186686898 + ... + 186686903.

It is an arithmetic number, because the mean of its divisors is an integer number (373373802).

Almost surely, 2^1120121403 is an apocalyptic number.

1120121403 is a deficient number, since it is larger than the sum of its proper divisors (373373805).

1120121403 is an equidigital number, since it uses as much as digits as its factorization.

1120121403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373373804.

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

The square root of 1120121403 is about 33468.2148164494. The cubic root of 1120121403 is about 1038.5363418932.

Adding to 1120121403 its reverse (3041210211), we get a palindrome (4161331614).

The spelling of 1120121403 in words is "one billion, one hundred twenty million, one hundred twenty-one thousand, four hundred three".