20212365371405 has 4 divisors (see below), whose sum is σ = 24254838445692. Its totient is φ = 16169892297120.

The previous prime is 20212365371389. The next prime is 20212365371413. The reversal of 20212365371405 is 50417356321202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5008581336196 + 15203784035209 = 2237986^2 + 3899203^2 .

It is not a de Polignac number, because 20212365371405 - 2⁴ = 20212365371389 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 3 ways as a sum of consecutive naturals, for example, 2021236537136 + ... + 2021236537145.

It is an arithmetic number, because the mean of its divisors is an integer number (6063709611423).

Almost surely, 2^{20212365371405} is an apocalyptic number.

It is an amenable number.

20212365371405 is a deficient number, since it is larger than the sum of its proper divisors (4042473074287).

20212365371405 is an equidigital number, since it uses as much as digits as its factorization.

20212365371405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042473074286.

The product of its (nonzero) digits is 302400, while the sum is 41.

The spelling of 20212365371405 in words is "twenty trillion, two hundred twelve billion, three hundred sixty-five million, three hundred seventy-one thousand, four hundred five".