21144210132132 has 72 divisors (see below), whose sum is σ = 56653437859200. Its totient is φ = 6626259364608.

The previous prime is 21144210132107. The next prime is 21144210132187. The reversal of 21144210132132 is 23123101244112.

21144210132132 is a `hidden beast` number, since 2 + 1 + 1 + 442 + 1 + 0 + 1 + 3 + 213 + 2 = 666.

It is a super-2 number, since 2×21144210132132² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21144210132096 and 21144210132105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18234832 + ... + 19359687.

It is an arithmetic number, because the mean of its divisors is an integer number (786853303600).

Almost surely, 2^{21144210132132} is an apocalyptic number.

It is an amenable number.

21144210132132 is an abundant number, since it is smaller than the sum of its proper divisors (35509227727068).

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

21144210132132 is a wasteful number, since it uses less digits than its factorization.

21144210132132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37595465 (or 37595460 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 21144210132132 its reverse (23123101244112), we get a palindrome (44267311376244).

The spelling of 21144210132132 in words is "twenty-one trillion, one hundred forty-four billion, two hundred ten million, one hundred thirty-two thousand, one hundred thirty-two".