305212021401 has 32 divisors (see below), whose sum is σ = 489127477248. Its totient is φ = 165510354240.

The previous prime is 305212021393. The next prime is 305212021453. The reversal of 305212021401 is 104120212503.

It is not a de Polignac number, because 305212021401 - 2³ = 305212021393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (305212021801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2426490 + ... + 2549171.

It is an arithmetic number, because the mean of its divisors is an integer number (15285233664).

Almost surely, 2^305212021401 is an apocalyptic number.

It is an amenable number.

305212021401 is a deficient number, since it is larger than the sum of its proper divisors (183915455847).

305212021401 is a wasteful number, since it uses less digits than its factorization.

305212021401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4975821.

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 305212021401 its reverse (104120212503), we get a palindrome (409332233904).

The spelling of 305212021401 in words is "three hundred five billion, two hundred twelve million, twenty-one thousand, four hundred one".