120001201022221 has 2 divisors, whose sum is σ = 120001201022222. Its totient is φ = 120001201022220.

The previous prime is 120001201022179. The next prime is 120001201022389. The reversal of 120001201022221 is 122220102100021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95804748240100 + 24196452782121 = 9787990^2 + 4918989^2 .

It is a cyclic number.

It is not a de Polignac number, because 120001201022221 - 2²³ = 120001192633613 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120001201022195 and 120001201022204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120001201022621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60000600511110 + 60000600511111.

It is an arithmetic number, because the mean of its divisors is an integer number (60000600511111).

Almost surely, 2^{120001201022221} is an apocalyptic number.

It is an amenable number.

120001201022221 is a deficient number, since it is larger than the sum of its proper divisors (1).

120001201022221 is an equidigital number, since it uses as much as digits as its factorization.

120001201022221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120001201022221 its reverse (122220102100021), we get a palindrome (242221303122242).

The spelling of 120001201022221 in words is "one hundred twenty trillion, one billion, two hundred one million, twenty-two thousand, two hundred twenty-one".