201023210111 has 4 divisors (see below), whose sum is σ = 207507829824. Its totient is φ = 194538590400.

The previous prime is 201023210083. The next prime is 201023210117. The reversal of 201023210111 is 111012320102.

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

It is not a de Polignac number, because 201023210111 - 2¹⁰ = 201023209087 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 (201023210117) 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, 3242309810 + ... + 3242309871.

It is an arithmetic number, because the mean of its divisors is an integer number (51876957456).

Almost surely, 2^201023210111 is an apocalyptic number.

201023210111 is a deficient number, since it is larger than the sum of its proper divisors (6484619713).

201023210111 is an equidigital number, since it uses as much as digits as its factorization.

201023210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6484619712.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 201023210111 its reverse (111012320102), we get a palindrome (312035530213).

The spelling of 201023210111 in words is "two hundred one billion, twenty-three million, two hundred ten thousand, one hundred eleven".