212221220112010 has 16 divisors (see below), whose sum is σ = 382000729897800. Its totient is φ = 84887925001216.

The previous prime is 212221220112007. The next prime is 212221220112091. The reversal of 212221220112010 is 10211022122212.

It can be written as a sum of positive squares in 4 ways, for example, as 211778719759161 + 442500352849 = 14552619^2 + 665207^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68795695 + ... + 71814274.

Almost surely, 2^{212221220112010} is an apocalyptic number.

212221220112010 is a deficient number, since it is larger than the sum of its proper divisors (169779509785790).

212221220112010 is a wasteful number, since it uses less digits than its factorization.

212221220112010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140760905.

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

Adding to 212221220112010 its reverse (10211022122212), we get a palindrome (222432242234222).

The spelling of 212221220112010 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred twenty million, one hundred twelve thousand, ten".