204223312221400 has 48 divisors (see below), whose sum is σ = 474827142600000. Its totient is φ = 81687958577280.

The previous prime is 204223312221377. The next prime is 204223312221427. The reversal of 204223312221400 is 4122213322402.

It is a super-2 number, since 2×204223312221400² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3490354 + ... + 20509246.

It is an arithmetic number, because the mean of its divisors is an integer number (9892232137500).

Almost surely, 2^{204223312221400} is an apocalyptic number.

204223312221400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204223312221400 is an abundant number, since it is smaller than the sum of its proper divisors (270603830378600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204223312221400 is a wasteful number, since it uses less digits than its factorization.

204223312221400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17078908 (or 17078899 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204223312221400 its reverse (4122213322402), we get a palindrome (208345525543802).

The spelling of 204223312221400 in words is "two hundred four trillion, two hundred twenty-three billion, three hundred twelve million, two hundred twenty-one thousand, four hundred".