11112001002021 has 4 divisors (see below), whose sum is σ = 14816001336032. Its totient is φ = 7408000668012.

The previous prime is 11112001002013. The next prime is 11112001002031. The reversal of 11112001002021 is 12020010021111.

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 not a de Polignac number, because 11112001002021 - 2³ = 11112001002013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11112001001988 and 11112001002006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11112001002031) 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, 1852000167001 + ... + 1852000167006.

It is an arithmetic number, because the mean of its divisors is an integer number (3704000334008).

Almost surely, 2^{11112001002021} is an apocalyptic number.

It is an amenable number.

11112001002021 is a deficient number, since it is larger than the sum of its proper divisors (3704000334011).

11112001002021 is an equidigital number, since it uses as much as digits as its factorization.

11112001002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3704000334010.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11112001002021 its reverse (12020010021111), we get a palindrome (23132011023132).

The spelling of 11112001002021 in words is "eleven trillion, one hundred twelve billion, one million, two thousand, twenty-one".