120201212100221 has 12 divisors (see below), whose sum is σ = 139841992574460. Its totient is φ = 103017752530560.

The previous prime is 120201212100197. The next prime is 120201212100289. The reversal of 120201212100221 is 122001212102021.

It can be written as a sum of positive squares in 2 ways, for example, as 96685647088996 + 23515565011225 = 9832886^2 + 4849285^2 .

It is not a de Polignac number, because 120201212100221 - 2³⁸ = 119926334193277 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 120201212100221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120201212102221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140734670 + ... + 141586191.

It is an arithmetic number, because the mean of its divisors is an integer number (11653499381205).

Almost surely, 2^{120201212100221} is an apocalyptic number.

It is an amenable number.

120201212100221 is a deficient number, since it is larger than the sum of its proper divisors (19640780474239).

120201212100221 is an equidigital number, since it uses as much as digits as its factorization.

120201212100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282329564 (or 282329557 counting only the distinct ones).

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

Adding to 120201212100221 its reverse (122001212102021), we get a palindrome (242202424202242).

The spelling of 120201212100221 in words is "one hundred twenty trillion, two hundred one billion, two hundred twelve million, one hundred thousand, two hundred twenty-one".