120221020021221 has 12 divisors (see below), whose sum is σ = 198460096543072. Its totient is φ = 68697725726376.

The previous prime is 120221020021217. The next prime is 120221020021229. The reversal of 120221020021221 is 122120020122021.

It is a happy number.

120221020021221 is a `hidden beast` number, since 1 + 2 + 0 + 221 + 0 + 200 + 21 + 221 = 666.

It is not a de Polignac number, because 120221020021221 - 2² = 120221020021217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120221020021194 and 120221020021203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221020021229) 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, 954135079471 + ... + 954135079596.

Almost surely, 2^{120221020021221} is an apocalyptic number.

It is an amenable number.

120221020021221 is a deficient number, since it is larger than the sum of its proper divisors (78239076521851).

120221020021221 is a wasteful number, since it uses less digits than its factorization.

120221020021221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1908270159080 (or 1908270159077 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 120221020021221 its reverse (122120020122021), we get a palindrome (242341040143242).

The spelling of 120221020021221 in words is "one hundred twenty trillion, two hundred twenty-one billion, twenty million, twenty-one thousand, two hundred twenty-one".