100120221121001 has 2 divisors, whose sum is σ = 100120221121002. Its totient is φ = 100120221121000.

The previous prime is 100120221120989. The next prime is 100120221121003. The reversal of 100120221121001 is 100121122021001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68092533312400 + 32027687808601 = 8251820^2 + 5659301^2 .

It is a cyclic number.

It is not a de Polignac number, because 100120221121001 - 2³⁰ = 100119147379177 is a prime.

Together with 100120221121003, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (100120221121003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50060110560500 + 50060110560501.

It is an arithmetic number, because the mean of its divisors is an integer number (50060110560501).

Almost surely, 2^{100120221121001} is an apocalyptic number.

It is an amenable number.

100120221121001 is a deficient number, since it is larger than the sum of its proper divisors (1).

100120221121001 is an equidigital number, since it uses as much as digits as its factorization.

100120221121001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 100120221121001 its reverse (100121122021001), we get a palindrome (200241343142002).

The spelling of 100120221121001 in words is "one hundred trillion, one hundred twenty billion, two hundred twenty-one million, one hundred twenty-one thousand, one".