120221001001 has 2 divisors, whose sum is σ = 120221001002. Its totient is φ = 120221001000.

The previous prime is 120221000981. The next prime is 120221001023. The reversal of 120221001001 is 100100122021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90869088025 + 29351912976 = 301445^2 + 171324^2 .

It is an emirp because it is prime and its reverse (100100122021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120221001001 - 2⁷ = 120221000873 is a prime.

It is not a weakly prime, because it can be changed into another prime (120221001091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60110500500 + 60110500501.

It is an arithmetic number, because the mean of its divisors is an integer number (60110500501).

Almost surely, 2^120221001001 is an apocalyptic number.

It is an amenable number.

120221001001 is a deficient number, since it is larger than the sum of its proper divisors (1).

120221001001 is an equidigital number, since it uses as much as digits as its factorization.

120221001001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 120221001001 its reverse (100100122021), we get a palindrome (220321123022).

The spelling of 120221001001 in words is "one hundred twenty billion, two hundred twenty-one million, one thousand, one".