101210111012111 has 4 divisors (see below), whose sum is σ = 101227480180632. Its totient is φ = 101192741843592.

The previous prime is 101210111012099. The next prime is 101210111012159. The reversal of 101210111012111 is 111210111012101.

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-101210111012111 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 (101210111012191) 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, 8684575520 + ... + 8684587173.

It is an arithmetic number, because the mean of its divisors is an integer number (25306870045158).

Almost surely, 2^{101210111012111} is an apocalyptic number.

101210111012111 is a deficient number, since it is larger than the sum of its proper divisors (17369168521).

101210111012111 is an equidigital number, since it uses as much as digits as its factorization.

101210111012111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17369168520.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 101210111012111 its reverse (111210111012101), we get a palindrome (212420222024212).

The spelling of 101210111012111 in words is "one hundred one trillion, two hundred ten billion, one hundred eleven million, twelve thousand, one hundred eleven".