211121011121212 has 24 divisors (see below), whose sum is σ = 371730096265472. Its totient is φ = 104912418078000.

The previous prime is 211121011121173. The next prime is 211121011121219. The reversal of 211121011121212 is 212121110121112.

It is a self number, because there is not a number n which added to its sum of digits gives 211121011121212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121011121219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174871837 + ... + 176074987.

Almost surely, 2^{211121011121212} is an apocalyptic number.

It is an amenable number.

211121011121212 is a deficient number, since it is larger than the sum of its proper divisors (160609085144260).

211121011121212 is a wasteful number, since it uses less digits than its factorization.

211121011121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472449 (or 1472447 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211121011121212 its reverse (212121110121112), we get a palindrome (423242121242324).

The spelling of 211121011121212 in words is "two hundred eleven trillion, one hundred twenty-one billion, eleven million, one hundred twenty-one thousand, two hundred twelve".