212120101121110 has 128 divisors (see below), whose sum is σ = 474324118458624. Its totient is φ = 66505038888960.

The previous prime is 212120101121059. The next prime is 212120101121113. The reversal of 212120101121110 is 11121101021212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120101121113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 204835030 + ... + 205867990.

It is an arithmetic number, because the mean of its divisors is an integer number (3705657175458).

Almost surely, 2^{212120101121110} is an apocalyptic number.

212120101121110 is an abundant number, since it is smaller than the sum of its proper divisors (262204017337514).

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

212120101121110 is a wasteful number, since it uses less digits than its factorization.

212120101121110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035098.

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

Adding to 212120101121110 its reverse (11121101021212), we get a palindrome (223241202142322).

The spelling of 212120101121110 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred one million, one hundred twenty-one thousand, one hundred ten".