120202020221221 has 4 divisors (see below), whose sum is σ = 125428195013472. Its totient is φ = 114975845428972.

The previous prime is 120202020221197. The next prime is 120202020221237. The reversal of 120202020221221 is 122122020202021.

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 120202020221221 - 2¹⁹ = 120202019696933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120202020221281) 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, 2613087396091 + ... + 2613087396136.

It is an arithmetic number, because the mean of its divisors is an integer number (31357048753368).

Almost surely, 2^{120202020221221} is an apocalyptic number.

It is an amenable number.

120202020221221 is a deficient number, since it is larger than the sum of its proper divisors (5226174792251).

120202020221221 is an equidigital number, since it uses as much as digits as its factorization.

120202020221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5226174792250.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 120202020221221 its reverse (122122020202021), we get a palindrome (242324040423242).

The spelling of 120202020221221 in words is "one hundred twenty trillion, two hundred two billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".