204214334144021 has 16 divisors (see below), whose sum is σ = 204560054899200. Its totient is φ = 203868959968128.

The previous prime is 204214334143993. The next prime is 204214334144033. The reversal of 204214334144021 is 120441433412402.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204214334144021 is a prime.

It is a super-2 number, since 2×204214334144021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204214334144081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11141587985 + ... + 11141606313.

It is an arithmetic number, because the mean of its divisors is an integer number (12785003431200).

Almost surely, 2^{204214334144021} is an apocalyptic number.

It is an amenable number.

204214334144021 is a deficient number, since it is larger than the sum of its proper divisors (345720755179).

204214334144021 is a wasteful number, since it uses less digits than its factorization.

204214334144021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26788.

The product of its (nonzero) digits is 73728, while the sum is 35.

Adding to 204214334144021 its reverse (120441433412402), we get a palindrome (324655767556423).

The spelling of 204214334144021 in words is "two hundred four trillion, two hundred fourteen billion, three hundred thirty-four million, one hundred forty-four thousand, twenty-one".