120021000212221 has 24 divisors (see below), whose sum is σ = 130464052291584. Its totient is φ = 110331689664000.

The previous prime is 120021000212213. The next prime is 120021000212249. The reversal of 120021000212221 is 122212000120021.

It is a happy number.

It is not a de Polignac number, because 120021000212221 - 2³ = 120021000212213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120021000212195 and 120021000212204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120021000212251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1124254596 + ... + 1124361346.

It is an arithmetic number, because the mean of its divisors is an integer number (5436002178816).

Almost surely, 2^{120021000212221} is an apocalyptic number.

It is an amenable number.

120021000212221 is a deficient number, since it is larger than the sum of its proper divisors (10443052079363).

120021000212221 is a wasteful number, since it uses less digits than its factorization.

120021000212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197301 (or 197284 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120021000212221 its reverse (122212000120021), we get a palindrome (242233000332242).

The spelling of 120021000212221 in words is "one hundred twenty trillion, twenty-one billion, two hundred twelve thousand, two hundred twenty-one".