10221011212212 has 72 divisors (see below), whose sum is σ = 26668068336000. Its totient is φ = 3298264567488.

The previous prime is 10221011212199. The next prime is 10221011212213. The reversal of 10221011212212 is 21221211012201.

10221011212212 is a `hidden beast` number, since 10 + 221 + 0 + 11 + 212 + 212 = 666.

It is a super-3 number, since 3×10221011212212³ (a number of 40 digits) contains 333 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221011212213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19014912 + ... + 19545047.

It is an arithmetic number, because the mean of its divisors is an integer number (370389838000).

Almost surely, 2^{10221011212212} is an apocalyptic number.

10221011212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10221011212212 is an abundant number, since it is smaller than the sum of its proper divisors (16447057123788).

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

10221011212212 is a wasteful number, since it uses less digits than its factorization.

10221011212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38560205 (or 38560200 counting only the distinct ones).

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

Adding to 10221011212212 its reverse (21221211012201), we get a palindrome (31442222224413).

The spelling of 10221011212212 in words is "ten trillion, two hundred twenty-one billion, eleven million, two hundred twelve thousand, two hundred twelve".