204222210132421 has 16 divisors (see below), whose sum is σ = 222716671752960. Its totient is φ = 186125638271040.

The previous prime is 204222210132407. The next prime is 204222210132427. The reversal of 204222210132421 is 124231012222402.

It is not a de Polignac number, because 204222210132421 - 2²¹ = 204222208035269 is a prime.

It is a super-2 number, since 2×204222210132421² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204222210132421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204222210132427) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 282899466 + ... + 283620436.

It is an arithmetic number, because the mean of its divisors is an integer number (13919791984560).

Almost surely, 2^{204222210132421} is an apocalyptic number.

It is an amenable number.

204222210132421 is a deficient number, since it is larger than the sum of its proper divisors (18494461620539).

204222210132421 is a wasteful number, since it uses less digits than its factorization.

204222210132421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 996876.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 204222210132421 its reverse (124231012222402), we get a palindrome (328453222354823).

The spelling of 204222210132421 in words is "two hundred four trillion, two hundred twenty-two billion, two hundred ten million, one hundred thirty-two thousand, four hundred twenty-one".