211122111111101 has 8 divisors (see below), whose sum is σ = 222241157829600. Its totient is φ = 200003800058640.

The previous prime is 211122111111091. The next prime is 211122111111113. The reversal of 211122111111101 is 101111111221112.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-211122111111101 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 211122111111101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211122111111151) 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, 183327386 + ... + 184475403.

It is an arithmetic number, because the mean of its divisors is an integer number (27780144728700).

Almost surely, 2^{211122111111101} is an apocalyptic number.

It is an amenable number.

211122111111101 is a deficient number, since it is larger than the sum of its proper divisors (11119046718499).

211122111111101 is a wasteful number, since it uses less digits than its factorization.

211122111111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367833019.

The product of its (nonzero) digits is 8, while the sum is 17.

Adding to 211122111111101 its reverse (101111111221112), we get a palindrome (312233222332213).

The spelling of 211122111111101 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, one hundred eleven thousand, one hundred one".