11012261305555 has 4 divisors (see below), whose sum is σ = 13214713566672. Its totient is φ = 8809809044440.

The previous prime is 11012261305537. The next prime is 11012261305603. The reversal of 11012261305555 is 55550316221011.

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

It is not a de Polignac number, because 11012261305555 - 2²⁷ = 11012127087827 is a prime.

It is a Duffinian 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, 1101226130551 + ... + 1101226130560.

It is an arithmetic number, because the mean of its divisors is an integer number (3303678391668).

Almost surely, 2^{11012261305555} is an apocalyptic number.

11012261305555 is a deficient number, since it is larger than the sum of its proper divisors (2202452261117).

11012261305555 is an equidigital number, since it uses as much as digits as its factorization.

11012261305555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2202452261116.

The product of its (nonzero) digits is 45000, while the sum is 37.

Adding to 11012261305555 its reverse (55550316221011), we get a palindrome (66562577526566).

The spelling of 11012261305555 in words is "eleven trillion, twelve billion, two hundred sixty-one million, three hundred five thousand, five hundred fifty-five".