120121220200221 has 24 divisors (see below), whose sum is σ = 174838350196224. Its totient is φ = 79467041734080.

The previous prime is 120121220200217. The next prime is 120121220200231. The reversal of 120121220200221 is 122002022121021.

It is a happy number.

120121220200221 is a `hidden beast` number, since 1 + 2 + 0 + 1 + 21 + 220 + 200 + 221 = 666.

It is not a de Polignac number, because 120121220200221 - 2² = 120121220200217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120121220200194 and 120121220200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120121220200231) 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, 36795460 + ... + 39926786.

It is an arithmetic number, because the mean of its divisors is an integer number (7284931258176).

Almost surely, 2^{120121220200221} is an apocalyptic number.

It is an amenable number.

120121220200221 is a deficient number, since it is larger than the sum of its proper divisors (54717129996003).

120121220200221 is a wasteful number, since it uses less digits than its factorization.

120121220200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164001 (or 3163998 counting only the distinct ones).

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

Adding to 120121220200221 its reverse (122002022121021), we get a palindrome (242123242321242).

The spelling of 120121220200221 in words is "one hundred twenty trillion, one hundred twenty-one billion, two hundred twenty million, two hundred thousand, two hundred twenty-one".