221110221022120 has 32 divisors (see below), whose sum is σ = 498081230667720. Its totient is φ = 88340402476800.

The previous prime is 221110221022111. The next prime is 221110221022127. The reversal of 221110221022120 is 21220122011122.

It can be written as a sum of positive squares in 4 ways, for example, as 195271725769156 + 25838495252964 = 13973966^2 + 5083158^2 .

It is not an unprimeable number, because it can be changed into a prime (221110221022127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3240150831 + ... + 3240219070.

Almost surely, 2^{221110221022120} is an apocalyptic number.

221110221022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221110221022120 is an abundant number, since it is smaller than the sum of its proper divisors (276971009645600).

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

221110221022120 is a wasteful number, since it uses less digits than its factorization.

221110221022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6480370765 (or 6480370761 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 221110221022120 its reverse (21220122011122), we get a palindrome (242330343033242).

The spelling of 221110221022120 in words is "two hundred twenty-one trillion, one hundred ten billion, two hundred twenty-one million, twenty-two thousand, one hundred twenty".