21214025244004 has 12 divisors (see below), whose sum is σ = 37370402086528. Its totient is φ = 10536767505000.

The previous prime is 21214025243993. The next prime is 21214025244007. The reversal of 21214025244004 is 40044252041212.

It is not an unprimeable number, because it can be changed into a prime (21214025244007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17561278572 + ... + 17561279779.

Almost surely, 2^{21214025244004} is an apocalyptic number.

It is an amenable number.

21214025244004 is a deficient number, since it is larger than the sum of its proper divisors (16156376842524).

21214025244004 is a wasteful number, since it uses less digits than its factorization.

21214025244004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35122558506 (or 35122558504 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 31.

Adding to 21214025244004 its reverse (40044252041212), we get a palindrome (61258277285216).

The spelling of 21214025244004 in words is "twenty-one trillion, two hundred fourteen billion, twenty-five million, two hundred forty-four thousand, four".