21012062 has 16 divisors (see below), whose sum is σ = 33806160. Its totient is φ = 9764352.

The previous prime is 21012059. The next prime is 21012073. The reversal of 21012062 is 26021012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3203 + ... + 7230.

It is an arithmetic number, because the mean of its divisors is an integer number (2112885).

Almost surely, 2^21012062 is an apocalyptic number.

21012062 is a deficient number, since it is larger than the sum of its proper divisors (12794098).

21012062 is a wasteful number, since it uses less digits than its factorization.

21012062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10507.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 21012062 is about 4583.8915781244. The cubic root of 21012062 is about 275.9452299778.

Adding to 21012062 its reverse (26021012), we get a palindrome (47033074).

The spelling of 21012062 in words is "twenty-one million, twelve thousand, sixty-two".