21211324262 has 16 divisors (see below), whose sum is σ = 32161436160. Its totient is φ = 10490957568.

The previous prime is 21211324259. The next prime is 21211324271. The reversal of 21211324262 is 26242311212.

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, 366683 + ... + 420569.

It is an arithmetic number, because the mean of its divisors is an integer number (2010089760).

Almost surely, 2^21211324262 is an apocalyptic number.

21211324262 is a deficient number, since it is larger than the sum of its proper divisors (10950111898).

21211324262 is a wasteful number, since it uses less digits than its factorization.

21211324262 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56015.

The product of its digits is 2304, while the sum is 26.

Adding to 21211324262 its reverse (26242311212), we get a palindrome (47453635474).

The spelling of 21211324262 in words is "twenty-one billion, two hundred eleven million, three hundred twenty-four thousand, two hundred sixty-two".