211201111121112 has 128 divisors (see below), whose sum is σ = 678757245619200. Its totient is φ = 60343174571040.

The previous prime is 211201111121111. The next prime is 211201111121167. The reversal of 211201111121112 is 211121111102112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211201111121111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 862119964 + ... + 862364907.

It is an arithmetic number, because the mean of its divisors is an integer number (5302790981400).

Almost surely, 2^{211201111121112} is an apocalyptic number.

It is an amenable number.

211201111121112 is an abundant number, since it is smaller than the sum of its proper divisors (467556134498088).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211201111121112 is an equidigital number, since it uses as much as digits as its factorization.

211201111121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1724484905 (or 1724484883 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 211201111121112 its reverse (211121111102112), we get a palindrome (422322222223224).

The spelling of 211201111121112 in words is "two hundred eleven trillion, two hundred one billion, one hundred eleven million, one hundred twenty-one thousand, one hundred twelve".