100221221212111 has 8 divisors (see below), whose sum is σ = 101429049625344. Its totient is φ = 99013400985240.

The previous prime is 100221221212093. The next prime is 100221221212193. The reversal of 100221221212111 is 111212122122001.

It is a happy number.

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 100221221212111 - 2²¹ = 100221219114959 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 (100221221252111) 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, 24675706 + ... + 28448776.

It is an arithmetic number, because the mean of its divisors is an integer number (12678631203168).

Almost surely, 2^{100221221212111} is an apocalyptic number.

100221221212111 is a deficient number, since it is larger than the sum of its proper divisors (1207828413233).

100221221212111 is an equidigital number, since it uses as much as digits as its factorization.

100221221212111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4093181.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 100221221212111 its reverse (111212122122001), we get a palindrome (211433343334112).

The spelling of 100221221212111 in words is "one hundred trillion, two hundred twenty-one billion, two hundred twenty-one million, two hundred twelve thousand, one hundred eleven".