211101111021212 has 24 divisors (see below), whose sum is σ = 378053276832000. Its totient is φ = 103086343722096.

The previous prime is 211101111021161. The next prime is 211101111021277. The reversal of 211101111021212 is 212120111101112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54968762 + ... + 58683617.

It is an arithmetic number, because the mean of its divisors is an integer number (15752219868000).

Almost surely, 2^{211101111021212} is an apocalyptic number.

It is an amenable number.

211101111021212 is a deficient number, since it is larger than the sum of its proper divisors (166952165810788).

211101111021212 is a wasteful number, since it uses less digits than its factorization.

211101111021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113663225 (or 113663223 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 211101111021212 its reverse (212120111101112), we get a palindrome (423221222122324).

The spelling of 211101111021212 in words is "two hundred eleven trillion, one hundred one billion, one hundred eleven million, twenty-one thousand, two hundred twelve".