2220220022021 has 4 divisors (see below), whose sum is σ = 2220247388544. Its totient is φ = 2220192655500.

The previous prime is 2220220021993. The next prime is 2220220022047. The reversal of 2220220022021 is 1202200220222.

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 2220220022021 - 2¹⁴ = 2220220005637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220220022051) 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, 13561205 + ... + 13723946.

It is an arithmetic number, because the mean of its divisors is an integer number (555061847136).

Almost surely, 2^{2220220022021} is an apocalyptic number.

It is an amenable number.

2220220022021 is a deficient number, since it is larger than the sum of its proper divisors (27366523).

2220220022021 is an equidigital number, since it uses as much as digits as its factorization.

2220220022021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27366522.

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 2220220022021 its reverse (1202200220222), we get a palindrome (3422420242243).

The spelling of 2220220022021 in words is "two trillion, two hundred twenty billion, two hundred twenty million, twenty-two thousand, twenty-one".