1121323402 has 4 divisors (see below), whose sum is σ = 1681985106. Its totient is φ = 560661700.

The previous prime is 1121323387. The next prime is 1121323403. The reversal of 1121323402 is 2043231211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2043231211 = 7 ⋅291890173.

It can be written as a sum of positive squares in only one way, i.e., 1075774401 + 45549001 = 32799^2 + 6749^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1121323402.

It is not an unprimeable number, because it can be changed into a prime (1121323403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280330849 + ... + 280330852.

Almost surely, 2^1121323402 is an apocalyptic number.

1121323402 is a deficient number, since it is larger than the sum of its proper divisors (560661704).

1121323402 is an equidigital number, since it uses as much as digits as its factorization.

1121323402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560661703.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1121323402 is about 33486.1673232396. The cubic root of 1121323402 is about 1038.9076925296.

Adding to 1121323402 its reverse (2043231211), we get a palindrome (3164554613).

The spelling of 1121323402 in words is "one billion, one hundred twenty-one million, three hundred twenty-three thousand, four hundred two".