100121220102221 has 8 divisors (see below), whose sum is σ = 103351143705600. Its totient is φ = 96891309425520.

The previous prime is 100121220102217. The next prime is 100121220102247. The reversal of 100121220102221 is 122201022121001.

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 100121220102221 - 2² = 100121220102217 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 100121220102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100121220102251) 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, 13960700 + ... + 19878218.

It is an arithmetic number, because the mean of its divisors is an integer number (12918892963200).

Almost surely, 2^{100121220102221} is an apocalyptic number.

It is an amenable number.

100121220102221 is a deficient number, since it is larger than the sum of its proper divisors (3229923603379).

100121220102221 is an equidigital number, since it uses as much as digits as its factorization.

100121220102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463339.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 100121220102221 its reverse (122201022121001), we get a palindrome (222322242223222).

The spelling of 100121220102221 in words is "one hundred trillion, one hundred twenty-one billion, two hundred twenty million, one hundred two thousand, two hundred twenty-one".