21012483 has 8 divisors (see below), whose sum is σ = 28164096. Its totient is φ = 13934600.

The previous prime is 21012457. The next prime is 21012503. The reversal of 21012483 is 38421012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21012483 - 2⁶ = 21012419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21012413) 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, 17763 + ... + 18908.

It is an arithmetic number, because the mean of its divisors is an integer number (3520512).

Almost surely, 2^21012483 is an apocalyptic number.

21012483 is a deficient number, since it is larger than the sum of its proper divisors (7151613).

21012483 is a wasteful number, since it uses less digits than its factorization.

21012483 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36865.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 21012483 is about 4583.9374995739. The cubic root of 21012483 is about 275.9470729219.

Adding to 21012483 its reverse (38421012), we get a palindrome (59433495).

The spelling of 21012483 in words is "twenty-one million, twelve thousand, four hundred eighty-three".