220120100212 has 12 divisors (see below), whose sum is σ = 394605545796. Its totient is φ = 107375658560.

The previous prime is 220120100209. The next prime is 220120100287. The reversal of 220120100212 is 212001021022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 95818726116 + 124301374096 = 309546^2 + 352564^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220120100192 and 220120100201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671097703 + ... + 671098030.

It is an arithmetic number, because the mean of its divisors is an integer number (32883795483).

Almost surely, 2^220120100212 is an apocalyptic number.

It is an amenable number.

220120100212 is a deficient number, since it is larger than the sum of its proper divisors (174485445584).

220120100212 is a wasteful number, since it uses less digits than its factorization.

220120100212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1342195778 (or 1342195776 counting only the distinct ones).

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

Adding to 220120100212 its reverse (212001021022), we get a palindrome (432121121234).

The spelling of 220120100212 in words is "two hundred twenty billion, one hundred twenty million, one hundred thousand, two hundred twelve".