2221000001212 has 24 divisors (see below), whose sum is σ = 4057225754400. Its totient is φ = 1061828038656.

The previous prime is 2221000001191. The next prime is 2221000001221. The reversal of 2221000001212 is 2121000001222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2221000001192 and 2221000001201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4172037 + ... + 4674172.

It is an arithmetic number, because the mean of its divisors is an integer number (169051073100).

Almost surely, 2^{2221000001212} is an apocalyptic number.

It is an amenable number.

2221000001212 is a deficient number, since it is larger than the sum of its proper divisors (1836225753188).

2221000001212 is a wasteful number, since it uses less digits than its factorization.

2221000001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8848965 (or 8848963 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2221000001212 its reverse (2121000001222), we get a palindrome (4342000002434).

The spelling of 2221000001212 in words is "two trillion, two hundred twenty-one billion, one thousand, two hundred twelve".