11036221655 has 4 divisors (see below), whose sum is σ = 13243465992. Its totient is φ = 8828977320.

The previous prime is 11036221639. The next prime is 11036221667. The reversal of 11036221655 is 55612263011.

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

It is not a de Polignac number, because 11036221655 - 2⁴ = 11036221639 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, 1103622161 + ... + 1103622170.

It is an arithmetic number, because the mean of its divisors is an integer number (3310866498).

Almost surely, 2^11036221655 is an apocalyptic number.

11036221655 is a deficient number, since it is larger than the sum of its proper divisors (2207244337).

11036221655 is an equidigital number, since it uses as much as digits as its factorization.

11036221655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2207244336.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 11036221655 its reverse (55612263011), we get a palindrome (66648484666).

The spelling of 11036221655 in words is "eleven billion, thirty-six million, two hundred twenty-one thousand, six hundred fifty-five".