21214026141604 has 24 divisors (see below), whose sum is σ = 38394359216640. Its totient is φ = 10249922669376.

The previous prime is 21214026141587. The next prime is 21214026141619. The reversal of 21214026141604 is 40614162041212.

It is a self number, because there is not a number n which added to its sum of digits gives 21214026141604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 714165937 + ... + 714195640.

It is an arithmetic number, because the mean of its divisors is an integer number (1599764967360).

Almost surely, 2^{21214026141604} is an apocalyptic number.

It is an amenable number.

21214026141604 is a deficient number, since it is larger than the sum of its proper divisors (17180333075036).

21214026141604 is a wasteful number, since it uses less digits than its factorization.

21214026141604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428361707 (or 1428361705 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

Adding to 21214026141604 its reverse (40614162041212), we get a palindrome (61828188182816).

The spelling of 21214026141604 in words is "twenty-one trillion, two hundred fourteen billion, twenty-six million, one hundred forty-one thousand, six hundred four".