2221110020020 has 12 divisors (see below), whose sum is σ = 4664331042084. Its totient is φ = 888444008000.

The previous prime is 2221110019967. The next prime is 2221110020027. The reversal of 2221110020020 is 200200111222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 307585596816 + 1913524423204 = 554604^2 + 1383302^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221110020027) 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, 55527750481 + ... + 55527750520.

It is an arithmetic number, because the mean of its divisors is an integer number (388694253507).

Almost surely, 2^{2221110020020} is an apocalyptic number.

2221110020020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221110020020 is an abundant number, since it is smaller than the sum of its proper divisors (2443221022064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221110020020 is a wasteful number, since it uses less digits than its factorization.

2221110020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111055501010 (or 111055501008 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2221110020020 its reverse (200200111222), we get a palindrome (2421310131242).

The spelling of 2221110020020 in words is "two trillion, two hundred twenty-one billion, one hundred ten million, twenty thousand, twenty".