10021512 has 32 divisors (see below), whose sum is σ = 26373600. Its totient is φ = 3164544.

The previous prime is 10021511. The next prime is 10021519. The reversal of 10021512 is 21512001.

It is a super-2 number, since 2×10021512² = 200861405532288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (10021511) 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, 10533 + ... + 11444.

It is an arithmetic number, because the mean of its divisors is an integer number (824175).

Almost surely, 2^10021512 is an apocalyptic number.

10021512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10021512 is an abundant number, since it is smaller than the sum of its proper divisors (16352088).

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

10021512 is a wasteful number, since it uses less digits than its factorization.

10021512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22005 (or 22001 counting only the distinct ones).

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 10021512 is about 3165.6771787408. The cubic root of 10021512 is about 215.5978456878.

Adding to 10021512 its reverse (21512001), we get a palindrome (31533513).

It can be divided in two parts, 100 and 21512, that added together give a palindrome (21612).

The spelling of 10021512 in words is "ten million, twenty-one thousand, five hundred twelve".