212012102121010 has 16 divisors (see below), whose sum is σ = 382118041027800. Its totient is φ = 84694561468416.

The previous prime is 212012102121007. The next prime is 212012102121049. The reversal of 212012102121010 is 10121201210212.

It can be written as a sum of positive squares in 4 ways, for example, as 130933621120129 + 81078481000881 = 11442623^2 + 9004359^2 .

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, 13784914425 + ... + 13784929804.

Almost surely, 2^{212012102121010} is an apocalyptic number.

212012102121010 is a deficient number, since it is larger than the sum of its proper divisors (170105938906790).

212012102121010 is a wasteful number, since it uses less digits than its factorization.

212012102121010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27569845005.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 212012102121010 its reverse (10121201210212), we get a palindrome (222133303331222).

The spelling of 212012102121010 in words is "two hundred twelve trillion, twelve billion, one hundred two million, one hundred twenty-one thousand, ten".