2012122210221 has 60 divisors (see below), whose sum is σ = 3361024898880. Its totient is φ = 1196059996800.

The previous prime is 2012122210207. The next prime is 2012122210243. The reversal of 2012122210221 is 1220122212102.

It is a happy number.

2012122210221 is a `hidden beast` number, since 20 + 1 + 212 + 2 + 210 + 221 = 666.

It is not a de Polignac number, because 2012122210221 - 2⁶ = 2012122210157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012122210194 and 2012122210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012122210291) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1817205 + ... + 2706746.

It is an arithmetic number, because the mean of its divisors is an integer number (56017081648).

Almost surely, 2^{2012122210221} is an apocalyptic number.

It is an amenable number.

2012122210221 is a deficient number, since it is larger than the sum of its proper divisors (1348902688659).

2012122210221 is a wasteful number, since it uses less digits than its factorization.

2012122210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4524016 (or 4523990 counting only the distinct ones).

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

Adding to 2012122210221 its reverse (1220122212102), we get a palindrome (3232244422323).

The spelling of 2012122210221 in words is "two trillion, twelve billion, one hundred twenty-two million, two hundred ten thousand, two hundred twenty-one".