101021111112221 has 4 divisors (see below), whose sum is σ = 101135001880992. Its totient is φ = 100907220343452.

The previous prime is 101021111112209. The next prime is 101021111112293. The reversal of 101021111112221 is 122211111120101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 101021111112221 - 2¹⁴ = 101021111095837 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101021111112221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101021111012221) 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, 56945383055 + ... + 56945384828.

It is an arithmetic number, because the mean of its divisors is an integer number (25283750470248).

Almost surely, 2^{101021111112221} is an apocalyptic number.

It is an amenable number.

101021111112221 is a deficient number, since it is larger than the sum of its proper divisors (113890768771).

101021111112221 is an equidigital number, since it uses as much as digits as its factorization.

101021111112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113890768770.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 101021111112221 its reverse (122211111120101), we get a palindrome (223232222232322).

The spelling of 101021111112221 in words is "one hundred one trillion, twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred twenty-one".