221110222110020 has 24 divisors (see below), whose sum is σ = 464468477923800. Its totient is φ = 88417991416832.

The previous prime is 221110222109999. The next prime is 221110222110053. The reversal of 221110222110020 is 20011222011122.

221110222110020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18554022123844 + 202556199986176 = 4307438^2 + 14232224^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1631019725 + ... + 1631155284.

It is an arithmetic number, because the mean of its divisors is an integer number (19352853246825).

Almost surely, 2^{221110222110020} is an apocalyptic number.

221110222110020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110222110020 is an abundant number, since it is smaller than the sum of its proper divisors (243358255813780).

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

221110222110020 is a wasteful number, since it uses less digits than its factorization.

221110222110020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3262178407 (or 3262178405 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 221110222110020 its reverse (20011222011122), we get a palindrome (241121444121142).

The spelling of 221110222110020 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty-two million, one hundred ten thousand, twenty".