21071012062 has 8 divisors (see below), whose sum is σ = 31637477592. Its totient is φ = 10525186200.

The previous prime is 21071012051. The next prime is 21071012063. The reversal of 21071012062 is 26021017012.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21071012063) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5157364 + ... + 5161447.

It is an arithmetic number, because the mean of its divisors is an integer number (3954684699).

Almost surely, 2^21071012062 is an apocalyptic number.

21071012062 is a deficient number, since it is larger than the sum of its proper divisors (10566465530).

21071012062 is a wasteful number, since it uses less digits than its factorization.

21071012062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10319834.

The product of its (nonzero) digits is 336, while the sum is 22.

Multiplying 21071012062 by its sum of digits (22), we get a palindrome (463562265364).

Adding to 21071012062 its reverse (26021017012), we get a palindrome (47092029074).

The spelling of 21071012062 in words is "twenty-one billion, seventy-one million, twelve thousand, sixty-two".