12020311405 has 8 divisors (see below), whose sum is σ = 15051520512. Its totient is φ = 9198151248.

The previous prime is 12020311393. The next prime is 12020311421. The reversal of 12020311405 is 50411302021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12020311405 - 2²¹ = 12018214253 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 52262109 + ... + 52262338.

It is an arithmetic number, because the mean of its divisors is an integer number (1881440064).

Almost surely, 2^12020311405 is an apocalyptic number.

It is an amenable number.

12020311405 is a deficient number, since it is larger than the sum of its proper divisors (3031209107).

12020311405 is a wasteful number, since it uses less digits than its factorization.

12020311405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104524475.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 12020311405 its reverse (50411302021), we get a palindrome (62431613426).

The spelling of 12020311405 in words is "twelve billion, twenty million, three hundred eleven thousand, four hundred five".