100221021221111 has 16 divisors (see below), whose sum is σ = 116486006534400. Its totient is φ = 84443119282368.

The previous prime is 100221021221099. The next prime is 100221021221197. The reversal of 100221021221111 is 111122120122001.

It is not a de Polignac number, because 100221021221111 - 2⁴⁶ = 29852277043447 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 100221021221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100221021221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937760 + ... + 14188778.

It is an arithmetic number, because the mean of its divisors is an integer number (7280375408400).

Almost surely, 2^{100221021221111} is an apocalyptic number.

100221021221111 is a deficient number, since it is larger than the sum of its proper divisors (16264985313289).

100221021221111 is a wasteful number, since it uses less digits than its factorization.

100221021221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13269398.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 100221021221111 its reverse (111122120122001), we get a palindrome (211343141343112).

The spelling of 100221021221111 in words is "one hundred trillion, two hundred twenty-one billion, twenty-one million, two hundred twenty-one thousand, one hundred eleven".