21113214143204 has 6 divisors (see below), whose sum is σ = 36948124750614. Its totient is φ = 10556607071600.

The previous prime is 21113214143201. The next prime is 21113214143243. The reversal of 21113214143204 is 40234141231112.

It can be written as a sum of positive squares in only one way, i.e., 10614629160100 + 10498584983104 = 3258010^2 + 3240152^2 .

It is a super-2 number, since 2×21113214143204² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21113214143201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2639151767897 + ... + 2639151767904.

It is an arithmetic number, because the mean of its divisors is an integer number (6158020791769).

Almost surely, 2^{21113214143204} is an apocalyptic number.

It is an amenable number.

21113214143204 is a deficient number, since it is larger than the sum of its proper divisors (15834910607410).

21113214143204 is a wasteful number, since it uses less digits than its factorization.

21113214143204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5278303535805 (or 5278303535803 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 21113214143204 its reverse (40234141231112), we get a palindrome (61347355374316).

The spelling of 21113214143204 in words is "twenty-one trillion, one hundred thirteen billion, two hundred fourteen million, one hundred forty-three thousand, two hundred four".