101211210011111 has 4 divisors (see below), whose sum is σ = 101576593441032. Its totient is φ = 100845826581192.

The previous prime is 101211210011077. The next prime is 101211210011173. The reversal of 101211210011111 is 111110012112101.

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-101211210011111 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 (101211210011911) 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, 182691714545 + ... + 182691715098.

It is an arithmetic number, because the mean of its divisors is an integer number (25394148360258).

Almost surely, 2^{101211210011111} is an apocalyptic number.

101211210011111 is a deficient number, since it is larger than the sum of its proper divisors (365383429921).

101211210011111 is an equidigital number, since it uses as much as digits as its factorization.

101211210011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365383429920.

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

Adding to 101211210011111 its reverse (111110012112101), we get a palindrome (212321222123212).

The spelling of 101211210011111 in words is "one hundred one trillion, two hundred eleven billion, two hundred ten million, eleven thousand, one hundred eleven".