1112002021 has 8 divisors (see below), whose sum is σ = 1209398904. Its totient is φ = 1016299200.

The previous prime is 1112002007. The next prime is 1112002027. The reversal of 1112002021 is 1202002111.

It can be written as a sum of positive squares in 4 ways, for example, as 344102500 + 767899521 = 18550^2 + 27711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1112002021 - 2⁷ = 1112001893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1112001989 and 1112002007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1112002027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 422146 + ... + 424771.

It is an arithmetic number, because the mean of its divisors is an integer number (151174863).

Almost surely, 2^1112002021 is an apocalyptic number.

It is an amenable number.

1112002021 is a deficient number, since it is larger than the sum of its proper divisors (97396883).

1112002021 is a wasteful number, since it uses less digits than its factorization.

1112002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847031.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1112002021 is about 33346.6943039336. The cubic root of 1112002021 is about 1036.0209211127.

Adding to 1112002021 its reverse (1202002111), we get a palindrome (2314004132).

The spelling of 1112002021 in words is "one billion, one hundred twelve million, two thousand, twenty-one".