421212433310403 has 16 divisors (see below), whose sum is σ = 648079046724096. Its totient is φ = 238355995547520.

The previous prime is 421212433310377. The next prime is 421212433310419. The reversal of 421212433310403 is 304013334212124.

It is not a de Polignac number, because 421212433310403 - 2¹⁸ = 421212433048259 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421212433360403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97367643078 + ... + 97367647403.

It is an arithmetic number, because the mean of its divisors is an integer number (40504940420256).

Almost surely, 2^{421212433310403} is an apocalyptic number.

421212433310403 is a deficient number, since it is larger than the sum of its proper divisors (226866613413693).

421212433310403 is a wasteful number, since it uses less digits than its factorization.

421212433310403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194735290594.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 421212433310403 its reverse (304013334212124), we get a palindrome (725225767522527).

The spelling of 421212433310403 in words is "four hundred twenty-one trillion, two hundred twelve billion, four hundred thirty-three million, three hundred ten thousand, four hundred three".