21141512 has 16 divisors (see below), whose sum is σ = 45303360. Its totient is φ = 9060624.

The previous prime is 21141503. The next prime is 21141539. The reversal of 21141512 is 21514112.

It is a super-2 number, since 2×21141512² = 893927059292288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188708 + ... + 188819.

It is an arithmetic number, because the mean of its divisors is an integer number (2831460).

Almost surely, 2^21141512 is an apocalyptic number.

It is an amenable number.

21141512 is an abundant number, since it is smaller than the sum of its proper divisors (24161848).

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

21141512 is a wasteful number, since it uses less digits than its factorization.

21141512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377540 (or 377536 counting only the distinct ones).

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

The square root of 21141512 is about 4597.9899956394. The cubic root of 21141512 is about 276.5107464864.

Adding to 21141512 its reverse (21514112), we get a palindrome (42655624).

The spelling of 21141512 in words is "twenty-one million, one hundred forty-one thousand, five hundred twelve".