2026020221 has 4 divisors (see below), whose sum is σ = 2091375744. Its totient is φ = 1960664700.

The previous prime is 2026020163. The next prime is 2026020229. The reversal of 2026020221 is 1220206202.

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 a de Polignac number, because none of the positive numbers 2^k-2026020221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2026020221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026020229) 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, 32677715 + ... + 32677776.

It is an arithmetic number, because the mean of its divisors is an integer number (522843936).

Almost surely, 2^2026020221 is an apocalyptic number.

It is an amenable number.

2026020221 is a deficient number, since it is larger than the sum of its proper divisors (65355523).

2026020221 is an equidigital number, since it uses as much as digits as its factorization.

2026020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65355522.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2026020221 is about 45011.3343614694. The cubic root of 2026020221 is about 1265.3614283846.

Adding to 2026020221 its reverse (1220206202), we get a palindrome (3246226423).

The spelling of 2026020221 in words is "two billion, twenty-six million, twenty thousand, two hundred twenty-one".