211112121201 has 16 divisors (see below), whose sum is σ = 282960532800. Its totient is φ = 140002809408.

The previous prime is 211112121197. The next prime is 211112121223. The reversal of 211112121201 is 102121211112.

It is a happy number.

It is not a de Polignac number, because 211112121201 - 2² = 211112121197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (211112121271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795570 + ... + 3850788.

It is an arithmetic number, because the mean of its divisors is an integer number (17685033300).

Almost surely, 2^211112121201 is an apocalyptic number.

It is an amenable number.

211112121201 is a deficient number, since it is larger than the sum of its proper divisors (71848411599).

211112121201 is a wasteful number, since it uses less digits than its factorization.

211112121201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61888.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211112121201 its reverse (102121211112), we get a palindrome (313233332313).

The spelling of 211112121201 in words is "two hundred eleven billion, one hundred twelve million, one hundred twenty-one thousand, two hundred one".