120221220311221 has 4 divisors (see below), whose sum is σ = 126548652959200. Its totient is φ = 113893787663244.

The previous prime is 120221220311207. The next prime is 120221220311321. The reversal of 120221220311221 is 122113022122021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120221220311221 - 2²⁹ = 120220683440309 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120221220311192 and 120221220311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221220311021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163716323961 + ... + 3163716323998.

It is an arithmetic number, because the mean of its divisors is an integer number (31637163239800).

Almost surely, 2^{120221220311221} is an apocalyptic number.

It is an amenable number.

120221220311221 is a deficient number, since it is larger than the sum of its proper divisors (6327432647979).

120221220311221 is an equidigital number, since it uses as much as digits as its factorization.

120221220311221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6327432647978.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 120221220311221 its reverse (122113022122021), we get a palindrome (242334242433242).

The spelling of 120221220311221 in words is "one hundred twenty trillion, two hundred twenty-one billion, two hundred twenty million, three hundred eleven thousand, two hundred twenty-one".