421212321404 has 72 divisors (see below), whose sum is σ = 855436173312. Its totient is φ = 177762695040.

The previous prime is 421212321401. The next prime is 421212321407. The reversal of 421212321404 is 404123212124.

It is an interprime number because it is at equal distance from previous prime (421212321401) and next prime (421212321407).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421212321401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66739409 + ... + 66745719.

Almost surely, 2^421212321404 is an apocalyptic number.

It is an amenable number.

421212321404 is an abundant number, since it is smaller than the sum of its proper divisors (434223851908).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

421212321404 is a wasteful number, since it uses less digits than its factorization.

421212321404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723 (or 6584 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 421212321404 its reverse (404123212124), we get a palindrome (825335533528).

The spelling of 421212321404 in words is "four hundred twenty-one billion, two hundred twelve million, three hundred twenty-one thousand, four hundred four".