1112002121 has 4 divisors (see below), whose sum is σ = 1113507600. Its totient is φ = 1110496644.

The previous prime is 1112002109. The next prime is 1112002127. The reversal of 1112002121 is 1212002111.

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.

It is a cyclic number.

It is not a de Polignac number, because 1112002121 - 2⁶ = 1112002057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1112002127) 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, 751631 + ... + 753108.

It is an arithmetic number, because the mean of its divisors is an integer number (278376900).

Almost surely, 2^1112002121 is an apocalyptic number.

It is an amenable number.

1112002121 is a deficient number, since it is larger than the sum of its proper divisors (1505479).

1112002121 is an equidigital number, since it uses as much as digits as its factorization.

1112002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1505478.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1112002121 is about 33346.6958033326. The cubic root of 1112002121 is about 1036.0209521684.

Adding to 1112002121 its reverse (1212002111), we get a palindrome (2324004232).

The spelling of 1112002121 in words is "one billion, one hundred twelve million, two thousand, one hundred twenty-one".