211131101121 has 8 divisors (see below), whose sum is σ = 281511561504. Its totient is φ = 140752354080.

The previous prime is 211131101117. The next prime is 211131101143. The reversal of 211131101121 is 121101131112.

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

It is not a de Polignac number, because 211131101121 - 2² = 211131101117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 211131101121.

It is not an unprimeable number, because it can be changed into a prime (211131101191) 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, 106191 + ... + 658436.

It is an arithmetic number, because the mean of its divisors is an integer number (35188945188).

Almost surely, 2^211131101121 is an apocalyptic number.

It is an amenable number.

211131101121 is a deficient number, since it is larger than the sum of its proper divisors (70380460383).

211131101121 is an equidigital number, since it uses as much as digits as its factorization.

211131101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856671.

The product of its (nonzero) digits is 12, while the sum is 15.

Adding to 211131101121 its reverse (121101131112), we get a palindrome (332232232233).

The spelling of 211131101121 in words is "two hundred eleven billion, one hundred thirty-one million, one hundred one thousand, one hundred twenty-one".