10212216520 has 64 divisors (see below), whose sum is σ = 26385652800. Its totient is φ = 3518081280.

The previous prime is 10212216503. The next prime is 10212216569. The reversal of 10212216520 is 2561221201.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 10212216491 and 10212216500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 602419 + ... + 619138.

It is an arithmetic number, because the mean of its divisors is an integer number (412275825).

Almost surely, 2^10212216520 is an apocalyptic number.

10212216520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212216520 is an abundant number, since it is smaller than the sum of its proper divisors (16173436280).

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

10212216520 is a wasteful number, since it uses less digits than its factorization.

10212216520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221598 (or 1221594 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 22.

Adding to 10212216520 its reverse (2561221201), we get a palindrome (12773437721).

The spelling of 10212216520 in words is "ten billion, two hundred twelve million, two hundred sixteen thousand, five hundred twenty".