220121011210 has 16 divisors (see below), whose sum is σ = 397918330056. Its totient is φ = 87670513408.

The previous prime is 220121011199. The next prime is 220121011217. The reversal of 220121011210 is 12110121022.

It can be written as a sum of positive squares in 4 ways, for example, as 69156902529 + 150964108681 = 262977^2 + 388541^2 .

It is a super-2 number, since 2×220121011210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220121011217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47233939 + ... + 47238598.

Almost surely, 2^220121011210 is an apocalyptic number.

220121011210 is a deficient number, since it is larger than the sum of its proper divisors (177797318846).

220121011210 is a wasteful number, since it uses less digits than its factorization.

220121011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94472777.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 220121011210 its reverse (12110121022), we get a palindrome (232231132232).

The spelling of 220121011210 in words is "two hundred twenty billion, one hundred twenty-one million, eleven thousand, two hundred ten".