211121202011212 has 12 divisors (see below), whose sum is σ = 369716729376456. Its totient is φ = 105487850760800.

The previous prime is 211121202011207. The next prime is 211121202011233. The reversal of 211121202011212 is 212110202121112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 211121202011212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18187554673 + ... + 18187566280.

It is an arithmetic number, because the mean of its divisors is an integer number (30809727448038).

Almost surely, 2^{211121202011212} is an apocalyptic number.

It is an amenable number.

211121202011212 is a deficient number, since it is larger than the sum of its proper divisors (158595527365244).

211121202011212 is a wasteful number, since it uses less digits than its factorization.

211121202011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36375122408 (or 36375122406 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211121202011212 its reverse (212110202121112), we get a palindrome (423231404132324).

The spelling of 211121202011212 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred two million, eleven thousand, two hundred twelve".