10212221012 has 12 divisors (see below), whose sum is σ = 20424442080. Its totient is φ = 4376666136.

The previous prime is 10212220987. The next prime is 10212221021. The reversal of 10212221012 is 21012221201.

10212221012 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182361062 + ... + 182361117.

It is an arithmetic number, because the mean of its divisors is an integer number (1702036840).

Almost surely, 2^10212221012 is an apocalyptic number.

It is an amenable number.

10212221012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

10212221012 is a wasteful number, since it uses less digits than its factorization.

10212221012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364722190 (or 364722188 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 10212221012 its reverse (21012221201), we get a palindrome (31224442213).

The spelling of 10212221012 in words is "ten billion, two hundred twelve million, two hundred twenty-one thousand, twelve".