2220013021 has 4 divisors (see below), whose sum is σ = 2220107292. Its totient is φ = 2219918752.

The previous prime is 2220013007. The next prime is 2220013043. The reversal of 2220013021 is 1203100222.

2220013021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1156340025 + 1063672996 = 34005^2 + 32614^2 .

It is a cyclic number.

It is not a de Polignac number, because 2220013021 - 2¹¹ = 2220010973 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2220012992 and 2220013010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220013421) 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, 21615 + ... + 70051.

It is an arithmetic number, because the mean of its divisors is an integer number (555026823).

Almost surely, 2^2220013021 is an apocalyptic number.

It is an amenable number.

2220013021 is a deficient number, since it is larger than the sum of its proper divisors (94271).

2220013021 is an equidigital number, since it uses as much as digits as its factorization.

2220013021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94270.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2220013021 is about 47117.0141350235. The cubic root of 2220013021 is about 1304.5233004906.

Adding to 2220013021 its reverse (1203100222), we get a palindrome (3423113243).

The spelling of 2220013021 in words is "two billion, two hundred twenty million, thirteen thousand, twenty-one".