10221512 has 32 divisors (see below), whose sum is σ = 22008000. Its totient is φ = 4359744.

The previous prime is 10221511. The next prime is 10221517. The reversal of 10221512 is 21512201.

It is a super-2 number, since 2×10221512² = 208958615132288, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (10221511) 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, 19283 + ... + 19805.

It is an arithmetic number, because the mean of its divisors is an integer number (687750).

Almost surely, 2^10221512 is an apocalyptic number.

It is an amenable number.

10221512 is an abundant number, since it is smaller than the sum of its proper divisors (11786488).

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

10221512 is a wasteful number, since it uses less digits than its factorization.

10221512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 10221512 is about 3197.1099449346. The cubic root of 10221512 is about 217.0226426995.

Adding to 10221512 its reverse (21512201), we get a palindrome (31733713).

The spelling of 10221512 in words is "ten million, two hundred twenty-one thousand, five hundred twelve".