101210221000111 has 4 divisors (see below), whose sum is σ = 101555648375832. Its totient is φ = 100864793624392.

The previous prime is 101210220999997. The next prime is 101210221000151. The reversal of 101210221000111 is 111000122012101.

It is a happy number.

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 101210221000111 - 2²¹ = 101210218902959 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101210221000091 and 101210221000100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101210221000151) 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, 172713687421 + ... + 172713688006.

It is an arithmetic number, because the mean of its divisors is an integer number (25388912093958).

Almost surely, 2^{101210221000111} is an apocalyptic number.

101210221000111 is a deficient number, since it is larger than the sum of its proper divisors (345427375721).

101210221000111 is an equidigital number, since it uses as much as digits as its factorization.

101210221000111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345427375720.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 101210221000111 its reverse (111000122012101), we get a palindrome (212210343012212).

The spelling of 101210221000111 in words is "one hundred one trillion, two hundred ten billion, two hundred twenty-one million, one hundred eleven", and thus it is an aban number.