10211220221212 has 6 divisors (see below), whose sum is σ = 17869635387128. Its totient is φ = 5105610110604.

The previous prime is 10211220221203. The next prime is 10211220221309. The reversal of 10211220221212 is 21212202211201.

10211220221212 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 10211220221212.

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, 1276402527648 + ... + 1276402527655.

Almost surely, 2^{10211220221212} is an apocalyptic number.

It is an amenable number.

10211220221212 is a deficient number, since it is larger than the sum of its proper divisors (7658415165916).

10211220221212 is a wasteful number, since it uses less digits than its factorization.

10211220221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552805055307 (or 2552805055305 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 10211220221212 its reverse (21212202211201), we get a palindrome (31423422432413).

The spelling of 10211220221212 in words is "ten trillion, two hundred eleven billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twelve".