101000221111 has 4 divisors (see below), whose sum is σ = 101584037592. Its totient is φ = 100416404632.

The previous prime is 101000221073. The next prime is 101000221123. The reversal of 101000221111 is 111122000101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 111122000101 = 7 ⋅15874571443.

It is a cyclic number.

It is not a de Polignac number, because 101000221111 - 2¹¹ = 101000219063 is a prime.

It is a super-4 number, since 4×101000221111⁴ (a number of 45 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101000221141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 291907981 + ... + 291908326.

It is an arithmetic number, because the mean of its divisors is an integer number (25396009398).

Almost surely, 2^101000221111 is an apocalyptic number.

101000221111 is a deficient number, since it is larger than the sum of its proper divisors (583816481).

101000221111 is an equidigital number, since it uses as much as digits as its factorization.

101000221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583816480.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101000221111 its reverse (111122000101), we get a palindrome (212122221212).

The spelling of 101000221111 in words is "one hundred one billion, two hundred twenty-one thousand, one hundred eleven".