201102120020111 has 4 divisors (see below), whose sum is σ = 209845690455792. Its totient is φ = 192358549584432.

The previous prime is 201102120020093. The next prime is 201102120020117. The reversal of 201102120020111 is 111020021201102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201102120020111 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 (201102120020117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4371785217806 + ... + 4371785217851.

It is an arithmetic number, because the mean of its divisors is an integer number (52461422613948).

Almost surely, 2^{201102120020111} is an apocalyptic number.

201102120020111 is a deficient number, since it is larger than the sum of its proper divisors (8743570435681).

201102120020111 is an equidigital number, since it uses as much as digits as its factorization.

201102120020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8743570435680.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 201102120020111 its reverse (111020021201102), we get a palindrome (312122141221213).

The spelling of 201102120020111 in words is "two hundred one trillion, one hundred two billion, one hundred twenty million, twenty thousand, one hundred eleven".