1112342021 has 4 divisors (see below), whose sum is σ = 1271248032. Its totient is φ = 953436012.

The previous prime is 1112341949. The next prime is 1112342029. The reversal of 1112342021 is 1202432111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1202432111 = 23 ⋅52279657.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112342021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112342029) 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, 79452995 + ... + 79453008.

It is an arithmetic number, because the mean of its divisors is an integer number (317812008).

Almost surely, 2^1112342021 is an apocalyptic number.

It is an amenable number.

1112342021 is a deficient number, since it is larger than the sum of its proper divisors (158906011).

1112342021 is an equidigital number, since it uses as much as digits as its factorization.

1112342021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158906010.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1112342021 is about 33351.7918709025. The cubic root of 1112342021 is about 1036.1264998233.

Adding to 1112342021 its reverse (1202432111), we get a palindrome (2314774132).

The spelling of 1112342021 in words is "one billion, one hundred twelve million, three hundred forty-two thousand, twenty-one".