10212221212 has 6 divisors (see below), whose sum is σ = 17871387128. Its totient is φ = 5106110604.

The previous prime is 10212221209. The next prime is 10212221233. The reversal of 10212221212 is 21212221201.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1276527648 + ... + 1276527655.

Almost surely, 2^10212221212 is an apocalyptic number.

It is an amenable number.

10212221212 is a deficient number, since it is larger than the sum of its proper divisors (7659165916).

10212221212 is a wasteful number, since it uses less digits than its factorization.

10212221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2553055307 (or 2553055305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 10212221212 its reverse (21212221201), we get a palindrome (31424442413).

The spelling of 10212221212 in words is "ten billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twelve".