1112242021 has 4 divisors (see below), whose sum is σ = 1213354944. Its totient is φ = 1011129100.

The previous prime is 1112242013. The next prime is 1112242031. The reversal of 1112242021 is 1202422111.

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: 1202422111 = 11 ⋅109311101.

It is a cyclic number.

It is not a de Polignac number, because 1112242021 - 2³ = 1112242013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112241986 and 1112242004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112242031) 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, 50556445 + ... + 50556466.

It is an arithmetic number, because the mean of its divisors is an integer number (303338736).

Almost surely, 2^1112242021 is an apocalyptic number.

1112242021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1112242021 is a deficient number, since it is larger than the sum of its proper divisors (101112923).

1112242021 is a wasteful number, since it uses less digits than its factorization.

1112242021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101112922.

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1112242021 is about 33350.2926673815. The cubic root of 1112242021 is about 1036.0954494949.

Adding to 1112242021 its reverse (1202422111), we get a palindrome (2314664132).

The spelling of 1112242021 in words is "one billion, one hundred twelve million, two hundred forty-two thousand, twenty-one".