211210122120012 has 72 divisors (see below), whose sum is σ = 556448282208000. Its totient is φ = 70049588176656.

The previous prime is 211210122119993. The next prime is 211210122120037. The reversal of 211210122120012 is 210021221012112.

211210122120012 is a `hidden beast` number, since 21 + 1 + 210 + 1 + 221 + 200 + 12 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545772312 + ... + 546159167.

It is an arithmetic number, because the mean of its divisors is an integer number (7728448364000).

Almost surely, 2^{211210122120012} is an apocalyptic number.

It is an amenable number.

211210122120012 is an abundant number, since it is smaller than the sum of its proper divisors (345238160087988).

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

211210122120012 is a wasteful number, since it uses less digits than its factorization.

211210122120012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091931697 (or 1091931683 counting only the distinct ones).

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

Adding to 211210122120012 its reverse (210021221012112), we get a palindrome (421231343132124).

The spelling of 211210122120012 in words is "two hundred eleven trillion, two hundred ten billion, one hundred twenty-two million, one hundred twenty thousand, twelve".