2011202512405 has 4 divisors (see below), whose sum is σ = 2413443014892. Its totient is φ = 1608962009920.

The previous prime is 2011202512367. The next prime is 2011202512433. The reversal of 2011202512405 is 5042152021102.

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 362733971076 + 1648468541329 = 602274^2 + 1283927^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2011202512405 is a prime.

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 2011202512405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201120251236 + ... + 201120251245.

It is an arithmetic number, because the mean of its divisors is an integer number (603360753723).

Almost surely, 2^{2011202512405} is an apocalyptic number.

It is an amenable number.

2011202512405 is a deficient number, since it is larger than the sum of its proper divisors (402240502487).

2011202512405 is an equidigital number, since it uses as much as digits as its factorization.

2011202512405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402240502486.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 2011202512405 its reverse (5042152021102), we get a palindrome (7053354533507).

The spelling of 2011202512405 in words is "two trillion, eleven billion, two hundred two million, five hundred twelve thousand, four hundred five".