21211423041432 has 64 divisors (see below), whose sum is σ = 57266752032000. Its totient is φ = 6508411749504.

The previous prime is 21211423041421. The next prime is 21211423041433. The reversal of 21211423041432 is 23414032411212.

It is a happy number.

It is a super-2 number, since 2×21211423041432² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21211423041432.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21211423041433) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94575082 + ... + 94799097.

It is an arithmetic number, because the mean of its divisors is an integer number (894793000500).

Almost surely, 2^{21211423041432} is an apocalyptic number.

It is an amenable number.

21211423041432 is an abundant number, since it is smaller than the sum of its proper divisors (36055328990568).

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

21211423041432 is a wasteful number, since it uses less digits than its factorization.

21211423041432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189374560 (or 189374556 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21211423041432 its reverse (23414032411212), we get a palindrome (44625455452644).

The spelling of 21211423041432 in words is "twenty-one trillion, two hundred eleven billion, four hundred twenty-three million, forty-one thousand, four hundred thirty-two".