21214040434124 has 24 divisors (see below), whose sum is σ = 37500873737040. Its totient is φ = 10499660342336.

The previous prime is 21214040434121. The next prime is 21214040434133. The reversal of 21214040434124 is 42143404041212.

It is not an unprimeable number, because it can be changed into a prime (21214040434121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18860459 + ... + 19953570.

It is an arithmetic number, because the mean of its divisors is an integer number (1562536405710).

Almost surely, 2^{21214040434124} is an apocalyptic number.

It is an amenable number.

21214040434124 is a deficient number, since it is larger than the sum of its proper divisors (16286833302916).

21214040434124 is a wasteful number, since it uses less digits than its factorization.

21214040434124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38815417 (or 38815415 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

Adding to 21214040434124 its reverse (42143404041212), we get a palindrome (63357444475336).

The spelling of 21214040434124 in words is "twenty-one trillion, two hundred fourteen billion, forty million, four hundred thirty-four thousand, one hundred twenty-four".