211112001211121 has 8 divisors (see below), whose sum is σ = 213785749706880. Its totient is φ = 208438288832592.

The previous prime is 211112001211103. The next prime is 211112001211141. The reversal of 211112001211121 is 121112100211112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 211112001211121 - 2³⁸ = 210837123304177 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 211112001211121.

It is not an unprimeable number, because it can be changed into a prime (211112001211141) 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, 2833166 + ... + 20742488.

It is an arithmetic number, because the mean of its divisors is an integer number (26723218713360).

Almost surely, 2^{211112001211121} is an apocalyptic number.

It is an amenable number.

211112001211121 is a deficient number, since it is larger than the sum of its proper divisors (2673748495759).

211112001211121 is a wasteful number, since it uses less digits than its factorization.

211112001211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18058615.

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

Adding to 211112001211121 its reverse (121112100211112), we get a palindrome (332224101422233).

The spelling of 211112001211121 in words is "two hundred eleven trillion, one hundred twelve billion, one million, two hundred eleven thousand, one hundred twenty-one".