201221002212 has 24 divisors (see below), whose sum is σ = 469837519200. Its totient is φ = 67027689216.

The previous prime is 201221002207. The next prime is 201221002217. The reversal of 201221002212 is 212200122102.

It is an interprime number because it is at equal distance from previous prime (201221002207) and next prime (201221002217).

It is a super-3 number, since 3×201221002212³ (a number of 35 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201221002191 and 201221002200.

It is not an unprimeable number, because it can be changed into a prime (201221002217) 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, 5729037 + ... + 5764052.

It is an arithmetic number, because the mean of its divisors is an integer number (19576563300).

Almost surely, 2^201221002212 is an apocalyptic number.

It is an amenable number.

201221002212 is an abundant number, since it is smaller than the sum of its proper divisors (268616516988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201221002212 is a wasteful number, since it uses less digits than its factorization.

201221002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11494555 (or 11494553 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201221002212 its reverse (212200122102), we get a palindrome (413421124314).

The spelling of 201221002212 in words is "two hundred one billion, two hundred twenty-one million, two thousand, two hundred twelve".