201011211121111 has 8 divisors (see below), whose sum is σ = 202215244974624. Its totient is φ = 199807181719200.

The previous prime is 201011211121093. The next prime is 201011211121163. The reversal of 201011211121111 is 111121112110102.

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 201011211121111 - 2⁷ = 201011211120983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011211121811) 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, 154081461 + ... + 155380561.

It is an arithmetic number, because the mean of its divisors is an integer number (25276905621828).

Almost surely, 2^{201011211121111} is an apocalyptic number.

201011211121111 is a deficient number, since it is larger than the sum of its proper divisors (1204033853513).

201011211121111 is a wasteful number, since it uses less digits than its factorization.

201011211121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225801.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 201011211121111 its reverse (111121112110102), we get a palindrome (312132323231213).

The spelling of 201011211121111 in words is "two hundred one trillion, eleven billion, two hundred eleven million, one hundred twenty-one thousand, one hundred eleven".