221100021010111 has 8 divisors (see below), whose sum is σ = 227432508212448. Its totient is φ = 214812286368000.

The previous prime is 221100021010097. The next prime is 221100021010133. The reversal of 221100021010111 is 111010120001122.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221100021010111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221100021010091 and 221100021010100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221100021017111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11188130035 + ... + 11188149796.

It is an arithmetic number, because the mean of its divisors is an integer number (28429063526556).

Almost surely, 2^{221100021010111} is an apocalyptic number.

221100021010111 is a deficient number, since it is larger than the sum of its proper divisors (6332487202337).

221100021010111 is a wasteful number, since it uses less digits than its factorization.

221100021010111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22376280113.

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

Adding to 221100021010111 its reverse (111010120001122), we get a palindrome (332110141011233).

The spelling of 221100021010111 in words is "two hundred twenty-one trillion, one hundred billion, twenty-one million, ten thousand, one hundred eleven".