2221100102120 has 32 divisors (see below), whose sum is σ = 5046955191720. Its totient is φ = 879643603200.

The previous prime is 2221100102119. The next prime is 2221100102149. The reversal of 2221100102120 is 212010011222.

It can be written as a sum of positive squares in 4 ways, for example, as 2083074477796 + 138025624324 = 1443286^2 + 371518^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2221100102095 and 2221100102104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 274884587 + ... + 274892666.

Almost surely, 2^{2221100102120} is an apocalyptic number.

2221100102120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221100102120 is an abundant number, since it is smaller than the sum of its proper divisors (2825855089600).

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

2221100102120 is a wasteful number, since it uses less digits than its factorization.

2221100102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549777365 (or 549777361 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2221100102120 its reverse (212010011222), we get a palindrome (2433110113342).

The spelling of 2221100102120 in words is "two trillion, two hundred twenty-one billion, one hundred million, one hundred two thousand, one hundred twenty".