2221101022120 has 16 divisors (see below), whose sum is σ = 4997477299860. Its totient is φ = 888440408832.

The previous prime is 2221101022109. The next prime is 2221101022123. The reversal of 2221101022120 is 212201011222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2029479461604 + 191621560516 = 1424598^2 + 437746^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2221101022094 and 2221101022103.

It is not an unprimeable number, because it can be changed into a prime (2221101022123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27763762737 + ... + 27763762816.

Almost surely, 2^{2221101022120} is an apocalyptic number.

2221101022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221101022120 is an abundant number, since it is smaller than the sum of its proper divisors (2776376277740).

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

2221101022120 is a wasteful number, since it uses less digits than its factorization.

2221101022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55527525564 (or 55527525560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2221101022120 its reverse (212201011222), we get a palindrome (2433302033342).

The spelling of 2221101022120 in words is "two trillion, two hundred twenty-one billion, one hundred one million, twenty-two thousand, one hundred twenty".