204221202122407 has 2 divisors, whose sum is σ = 204221202122408. Its totient is φ = 204221202122406.

The previous prime is 204221202122359. The next prime is 204221202122423. The reversal of 204221202122407 is 704221202122402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204221202122407 is a prime.

It is a super-2 number, since 2×204221202122407² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204221202126407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102110601061203 + 102110601061204.

It is an arithmetic number, because the mean of its divisors is an integer number (102110601061204).

Almost surely, 2^{204221202122407} is an apocalyptic number.

204221202122407 is a deficient number, since it is larger than the sum of its proper divisors (1).

204221202122407 is an equidigital number, since it uses as much as digits as its factorization.

204221202122407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14336, while the sum is 31.

Adding to 204221202122407 its reverse (704221202122402), we get a palindrome (908442404244809).

The spelling of 204221202122407 in words is "two hundred four trillion, two hundred twenty-one billion, two hundred two million, one hundred twenty-two thousand, four hundred seven".