201212120220221 has 8 divisors (see below), whose sum is σ = 226584909573888. Its totient is φ = 177019460604000.

The previous prime is 201212120220197. The next prime is 201212120220229. The reversal of 201212120220221 is 122022021212102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 201212120220221 - 2⁶ = 201212120220157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201212120220193 and 201212120220202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201212120220229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 295032434000 + ... + 295032434681.

It is an arithmetic number, because the mean of its divisors is an integer number (28323113696736).

Almost surely, 2^{201212120220221} is an apocalyptic number.

It is an amenable number.

201212120220221 is a deficient number, since it is larger than the sum of its proper divisors (25372789353667).

201212120220221 is a wasteful number, since it uses less digits than its factorization.

201212120220221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590064868723.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201212120220221 its reverse (122022021212102), we get a palindrome (323234141432323).

The spelling of 201212120220221 in words is "two hundred one trillion, two hundred twelve billion, one hundred twenty million, two hundred twenty thousand, two hundred twenty-one".