10215221012 has 24 divisors (see below), whose sum is σ = 19108861632. Its totient is φ = 4766379200.

The previous prime is 10215221011. The next prime is 10215221017. The reversal of 10215221012 is 21012251201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10215221011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1350314 + ... + 1357857.

It is an arithmetic number, because the mean of its divisors is an integer number (796202568).

Almost surely, 2^10215221012 is an apocalyptic number.

It is an amenable number.

10215221012 is a deficient number, since it is larger than the sum of its proper divisors (8893640620).

10215221012 is a wasteful number, since it uses less digits than its factorization.

10215221012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2708239 (or 2708237 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 10215221012 its reverse (21012251201), we get a palindrome (31227472213).

The spelling of 10215221012 in words is "ten billion, two hundred fifteen million, two hundred twenty-one thousand, twelve".