421112321221312 has 56 divisors (see below), whose sum is σ = 955335813581600. Its totient is φ = 180417516410880.

The previous prime is 421112321221279. The next prime is 421112321221369. The reversal of 421112321221312 is 213122123211124.

It is a tau number, because it is divible by the number of its divisors (56).

It is a super-3 number, since 3×421112321221312³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152780139 + ... + 155512042.

Almost surely, 2^{421112321221312} is an apocalyptic number.

It is an amenable number.

421112321221312 is an abundant number, since it is smaller than the sum of its proper divisors (534223492360288).

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

421112321221312 is a wasteful number, since it uses less digits than its factorization.

421112321221312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308295249 (or 308295239 counting only the distinct ones).

The product of its digits is 2304, while the sum is 28.

Adding to 421112321221312 its reverse (213122123211124), we get a palindrome (634234444432436).

The spelling of 421112321221312 in words is "four hundred twenty-one trillion, one hundred twelve billion, three hundred twenty-one million, two hundred twenty-one thousand, three hundred twelve".