302412400221 has 16 divisors (see below), whose sum is σ = 420806871936. Its totient is φ = 192815563776.

The previous prime is 302412400217. The next prime is 302412400253. The reversal of 302412400221 is 122004214203.

It is not a de Polignac number, because 302412400221 - 2² = 302412400217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (302412400211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 191661 + ... + 800973.

It is an arithmetic number, because the mean of its divisors is an integer number (26300429496).

Almost surely, 2^302412400221 is an apocalyptic number.

It is an amenable number.

302412400221 is a deficient number, since it is larger than the sum of its proper divisors (118394471715).

302412400221 is a wasteful number, since it uses less digits than its factorization.

302412400221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616532.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 302412400221 its reverse (122004214203), we get a palindrome (424416614424).

The spelling of 302412400221 in words is "three hundred two billion, four hundred twelve million, four hundred thousand, two hundred twenty-one".