12210111020212 has 18 divisors (see below), whose sum is σ = 24856297434402. Its totient is φ = 5232904722864.

The previous prime is 12210111020153. The next prime is 12210111020251. The reversal of 12210111020212 is 21202011101221.

It can be written as a sum of positive squares in only one way, i.e., 11006429948836 + 1203681071376 = 3317594^2 + 1097124^2 .

It is a super-2 number, since 2×12210111020212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 31148242203 + ... + 31148242594.

Almost surely, 2^{12210111020212} is an apocalyptic number.

It is an amenable number.

12210111020212 is an abundant number, since it is smaller than the sum of its proper divisors (12646186414190).

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

12210111020212 is a wasteful number, since it uses less digits than its factorization.

12210111020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62296484815 (or 62296484806 counting only the distinct ones).

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

Adding to 12210111020212 its reverse (21202011101221), we get a palindrome (33412122121433).

The spelling of 12210111020212 in words is "twelve trillion, two hundred ten billion, one hundred eleven million, twenty thousand, two hundred twelve".