10221212011212 has 72 divisors (see below), whose sum is σ = 27182449930272. Its totient is φ = 3234134304000.

The previous prime is 10221212011187. The next prime is 10221212011237. The reversal of 10221212011212 is 21211021212201.

10221212011212 is a `hidden beast` number, since 10 + 221 + 21 + 201 + 1 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (10221212011187) and next prime (10221212011237).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93525664 + ... + 93634887.

Almost surely, 2^{10221212011212} is an apocalyptic number.

10221212011212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221212011212 is an abundant number, since it is smaller than the sum of its proper divisors (16961237919060).

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

10221212011212 is a wasteful number, since it uses less digits than its factorization.

10221212011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187160639 (or 187160634 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10221212011212 its reverse (21211021212201), we get a palindrome (31432233223413).

The spelling of 10221212011212 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, eleven thousand, two hundred twelve".