2220440520221 has 12 divisors (see below), whose sum is σ = 2789313712416. Its totient is φ = 1730213391720.

The previous prime is 2220440520191. The next prime is 2220440520281. The reversal of 2220440520221 is 1220250440222.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-2220440520221 is a prime.

It is a super-2 number, since 2×2220440520221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220440520281) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1310766875 + ... + 1310768568.

It is an arithmetic number, because the mean of its divisors is an integer number (232442809368).

Almost surely, 2^{2220440520221} is an apocalyptic number.

It is an amenable number.

2220440520221 is a deficient number, since it is larger than the sum of its proper divisors (568873192195).

2220440520221 is a wasteful number, since it uses less digits than its factorization.

2220440520221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2621535472 (or 2621535461 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 2220440520221 its reverse (1220250440222), we get a palindrome (3440690960443).

The spelling of 2220440520221 in words is "two trillion, two hundred twenty billion, four hundred forty million, five hundred twenty thousand, two hundred twenty-one".