11211203055 has 32 divisors (see below), whose sum is σ = 19417922496. Its totient is φ = 5490745344.

The previous prime is 11211203021. The next prime is 11211203089. The reversal of 11211203055 is 55030211211.

It is an interprime number because it is at equal distance from previous prime (11211203021) and next prime (11211203089).

It is not a de Polignac number, because 11211203055 - 2⁸ = 11211202799 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 111312 + ... + 186581.

It is an arithmetic number, because the mean of its divisors is an integer number (606810078).

Almost surely, 2^11211203055 is an apocalyptic number.

11211203055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11211203055 is a deficient number, since it is larger than the sum of its proper divisors (8206719441).

11211203055 is a wasteful number, since it uses less digits than its factorization.

11211203055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298107.

The product of its (nonzero) digits is 300, while the sum is 21.

Adding to 11211203055 its reverse (55030211211), we get a palindrome (66241414266).

The spelling of 11211203055 in words is "eleven billion, two hundred eleven million, two hundred three thousand, fifty-five".