101021111011211 has 4 divisors (see below), whose sum is σ = 102733333231800. Its totient is φ = 99308888790624.

The previous prime is 101021111011207. The next prime is 101021111011397. The reversal of 101021111011211 is 112110111120101.

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

It is a cyclic number.

It is not a de Polignac number, because 101021111011211 - 2² = 101021111011207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101021111011411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 856111110206 + ... + 856111110323.

It is an arithmetic number, because the mean of its divisors is an integer number (25683333307950).

Almost surely, 2^{101021111011211} is an apocalyptic number.

101021111011211 is a deficient number, since it is larger than the sum of its proper divisors (1712222220589).

101021111011211 is an equidigital number, since it uses as much as digits as its factorization.

101021111011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1712222220588.

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

Adding to 101021111011211 its reverse (112110111120101), we get a palindrome (213131222131312).

The spelling of 101021111011211 in words is "one hundred one trillion, twenty-one billion, one hundred eleven million, eleven thousand, two hundred eleven".