212120122210110 has 48 divisors (see below), whose sum is σ = 551585629664784. Its totient is φ = 56557846751616.

The previous prime is 212120122210097. The next prime is 212120122210111. The reversal of 212120122210110 is 11012221021212.

212120122210110 is a `hidden beast` number, since 2 + 121 + 201 + 22 + 210 + 110 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212120122210111) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155968567 + ... + 157322706.

It is an arithmetic number, because the mean of its divisors is an integer number (11491367284683).

Almost surely, 2^{212120122210110} is an apocalyptic number.

212120122210110 is an abundant number, since it is smaller than the sum of its proper divisors (339465507454674).

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

212120122210110 is a wasteful number, since it uses less digits than its factorization.

212120122210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313298809 (or 313298806 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 212120122210110 its reverse (11012221021212), we get a palindrome (223132343231322).

The spelling of 212120122210110 in words is "two hundred twelve trillion, one hundred twenty billion, one hundred twenty-two million, two hundred ten thousand, one hundred ten".