100221111111 has 8 divisors (see below), whose sum is σ = 145776161664. Its totient is φ = 60740067320.

The previous prime is 100221111101. The next prime is 100221111121. The reversal of 100221111111 is 111111122001.

It is an interprime number because it is at equal distance from previous prime (100221111101) and next prime (100221111121).

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

It is a cyclic number.

It is not a de Polignac number, because 100221111111 - 2⁵ = 100221111079 is a prime.

It is a super-2 number, since 2×100221111111² (a number of 23 digits) contains 22 as substring.

100221111111 is a modest number, since divided by 111111 gives 100221 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221111101) 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, 1518501651 + ... + 1518501716.

It is an arithmetic number, because the mean of its divisors is an integer number (18222020208).

Almost surely, 2^100221111111 is an apocalyptic number.

100221111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100221111111 is a deficient number, since it is larger than the sum of its proper divisors (45555050553).

100221111111 is a wasteful number, since it uses less digits than its factorization.

100221111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3037003381.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 100221111111 its reverse (111111122001), we get a palindrome (211332233112).

The spelling of 100221111111 in words is "one hundred billion, two hundred twenty-one million, one hundred eleven thousand, one hundred eleven".