21211134132 has 48 divisors (see below), whose sum is σ = 50509831680. Its totient is φ = 6925915488.

The previous prime is 21211134079. The next prime is 21211134143. The reversal of 21211134132 is 23143111212.

It is a super-2 number, since 2×21211134132² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21211134099 and 21211134108.

It is a congruent number.

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, 147433 + ... + 253295.

It is an arithmetic number, because the mean of its divisors is an integer number (1052288160).

Almost surely, 2^21211134132 is an apocalyptic number.

It is an amenable number.

21211134132 is an abundant number, since it is smaller than the sum of its proper divisors (29298697548).

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

21211134132 is a wasteful number, since it uses less digits than its factorization.

21211134132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106212 (or 106210 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 21211134132 its reverse (23143111212), we get a palindrome (44354245344).

The spelling of 21211134132 in words is "twenty-one billion, two hundred eleven million, one hundred thirty-four thousand, one hundred thirty-two".