412020431121421 has 4 divisors (see below), whose sum is σ = 412021302322144. Its totient is φ = 412019559920700.

The previous prime is 412020431121391. The next prime is 412020431121503. The reversal of 412020431121421 is 124121134020214.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 412020431121421 - 2¹⁵ = 412020431088653 is a prime.

It is a super-2 number, since 2×412020431121421² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 412020431121421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412020431101421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 434890575 + ... + 435836956.

It is an arithmetic number, because the mean of its divisors is an integer number (103005325580536).

Almost surely, 2^{412020431121421} is an apocalyptic number.

It is an amenable number.

412020431121421 is a deficient number, since it is larger than the sum of its proper divisors (871200723).

412020431121421 is an equidigital number, since it uses as much as digits as its factorization.

412020431121421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 871200722.

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 412020431121421 its reverse (124121134020214), we get a palindrome (536141565141635).

The spelling of 412020431121421 in words is "four hundred twelve trillion, twenty billion, four hundred thirty-one million, one hundred twenty-one thousand, four hundred twenty-one".