12020034302421 has 4 divisors (see below), whose sum is σ = 16026712403232. Its totient is φ = 8013356201612.

The previous prime is 12020034302407. The next prime is 12020034302509. The reversal of 12020034302421 is 12420343002021.

It is a happy number.

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 12020034302421 - 2¹⁵ = 12020034269653 is a prime.

It is a super-2 number, since 2×12020034302421² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12020034302391 and 12020034302400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12020034302921) 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, 2003339050401 + ... + 2003339050406.

It is an arithmetic number, because the mean of its divisors is an integer number (4006678100808).

Almost surely, 2^{12020034302421} is an apocalyptic number.

It is an amenable number.

12020034302421 is a deficient number, since it is larger than the sum of its proper divisors (4006678100811).

12020034302421 is an equidigital number, since it uses as much as digits as its factorization.

12020034302421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4006678100810.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 12020034302421 its reverse (12420343002021), we get a palindrome (24440377304442).

The spelling of 12020034302421 in words is "twelve trillion, twenty billion, thirty-four million, three hundred two thousand, four hundred twenty-one".