21211301132 has 48 divisors (see below), whose sum is σ = 46871032320. Its totient is φ = 8183822592.

The previous prime is 21211301119. The next prime is 21211301159. The reversal of 21211301132 is 23110311212.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 21211301132.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 957782 + ... + 979677.

It is an arithmetic number, because the mean of its divisors is an integer number (976479840).

Almost surely, 2^21211301132 is an apocalyptic number.

It is an amenable number.

21211301132 is an abundant number, since it is smaller than the sum of its proper divisors (25659731188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21211301132 is a wasteful number, since it uses less digits than its factorization.

21211301132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1937510 (or 1937508 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21211301132 its reverse (23110311212), we get a palindrome (44321612344).

The spelling of 21211301132 in words is "twenty-one billion, two hundred eleven million, three hundred one thousand, one hundred thirty-two".