21214040442324 has 24 divisors (see below), whose sum is σ = 49499561022240. Its totient is φ = 7071327767904.

The previous prime is 21214040442313. The next prime is 21214040442437. The reversal of 21214040442324 is 42324404041212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2692587 + ... + 7048269.

It is an arithmetic number, because the mean of its divisors is an integer number (2062481709260).

Almost surely, 2^{21214040442324} is an apocalyptic number.

It is an amenable number.

21214040442324 is an abundant number, since it is smaller than the sum of its proper divisors (28285520579916).

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

21214040442324 is a wasteful number, since it uses less digits than its factorization.

21214040442324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4761559 (or 4761557 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 21214040442324 its reverse (42324404041212), we get a palindrome (63538444483536).

The spelling of 21214040442324 in words is "twenty-one trillion, two hundred fourteen billion, forty million, four hundred forty-two thousand, three hundred twenty-four".