120021020101221 has 4 divisors (see below), whose sum is σ = 160028026801632. Its totient is φ = 80014013400812.

The previous prime is 120021020101189. The next prime is 120021020101243. The reversal of 120021020101221 is 122101020120021.

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 120021020101221 - 2⁵ = 120021020101189 is a prime.

It is a super-2 number, since 2×120021020101221² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 120021020101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021020101271) 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, 20003503350201 + ... + 20003503350206.

It is an arithmetic number, because the mean of its divisors is an integer number (40007006700408).

Almost surely, 2^{120021020101221} is an apocalyptic number.

It is an amenable number.

120021020101221 is a deficient number, since it is larger than the sum of its proper divisors (40007006700411).

120021020101221 is an equidigital number, since it uses as much as digits as its factorization.

120021020101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40007006700410.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 120021020101221 its reverse (122101020120021), we get a palindrome (242122040221242).

The spelling of 120021020101221 in words is "one hundred twenty trillion, twenty-one billion, twenty million, one hundred one thousand, two hundred twenty-one".