120021201101221 has 32 divisors (see below), whose sum is σ = 145678351433472. Its totient is φ = 96528797245440.

The previous prime is 120021201101171. The next prime is 120021201101227. The reversal of 120021201101221 is 122101102120021.

It is not a de Polignac number, because 120021201101221 - 2¹³ = 120021201093029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120021201101195 and 120021201101204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021201101227) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 530890810 + ... + 531116836.

It is an arithmetic number, because the mean of its divisors is an integer number (4552448482296).

Almost surely, 2^{120021201101221} is an apocalyptic number.

It is an amenable number.

120021201101221 is a deficient number, since it is larger than the sum of its proper divisors (25657150332251).

120021201101221 is a wasteful number, since it uses less digits than its factorization.

120021201101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239629.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 120021201101221 its reverse (122101102120021), we get a palindrome (242122303221242).

The spelling of 120021201101221 in words is "one hundred twenty trillion, twenty-one billion, two hundred one million, one hundred one thousand, two hundred twenty-one".