21213311032 has 16 divisors (see below), whose sum is σ = 40078585800. Its totient is φ = 10525688160.

The previous prime is 21213311029. The next prime is 21213311039. The reversal of 21213311032 is 23011331212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21213311039) 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, 10119807 + ... + 10121902.

Almost surely, 2^21213311032 is an apocalyptic number.

It is an amenable number.

21213311032 is a deficient number, since it is larger than the sum of its proper divisors (18865274768).

21213311032 is a wasteful number, since it uses less digits than its factorization.

21213311032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20241846 (or 20241842 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21213311032 its reverse (23011331212), we get a palindrome (44224642244).

The spelling of 21213311032 in words is "twenty-one billion, two hundred thirteen million, three hundred eleven thousand, thirty-two".