1000221111101 has 4 divisors (see below), whose sum is σ = 1002666639900. Its totient is φ = 997775582304.

The previous prime is 1000221111091. The next prime is 1000221111119. The reversal of 1000221111101 is 1011111220001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 378133985476 + 622087125625 = 614926^2 + 788725^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000221111101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000221111601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1222763786 + ... + 1222764603.

It is an arithmetic number, because the mean of its divisors is an integer number (250666659975).

Almost surely, 2^{1000221111101} is an apocalyptic number.

It is an amenable number.

1000221111101 is a deficient number, since it is larger than the sum of its proper divisors (2445528799).

1000221111101 is an equidigital number, since it uses as much as digits as its factorization.

1000221111101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445528798.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1000221111101 its reverse (1011111220001), we get a palindrome (2011332331102).

The spelling of 1000221111101 in words is "one trillion, two hundred twenty-one million, one hundred eleven thousand, one hundred one".