100221221211011 has 4 divisors (see below), whose sum is σ = 105496022327400. Its totient is φ = 94946420094624.

The previous prime is 100221221210969. The next prime is 100221221211029. The reversal of 100221221211011 is 110112122122001.

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

It is a cyclic number.

It is not a de Polignac number, because 100221221211011 - 2²² = 100221217016707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221221211511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637400558166 + ... + 2637400558203.

It is an arithmetic number, because the mean of its divisors is an integer number (26374005581850).

Almost surely, 2^{100221221211011} is an apocalyptic number.

100221221211011 is a deficient number, since it is larger than the sum of its proper divisors (5274801116389).

100221221211011 is an equidigital number, since it uses as much as digits as its factorization.

100221221211011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5274801116388.

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

Adding to 100221221211011 its reverse (110112122122001), we get a palindrome (210333343333012).

The spelling of 100221221211011 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred eleven thousand, eleven".