11100105550 has 24 divisors (see below), whose sum is σ = 20760280632. Its totient is φ = 4415508000.

The previous prime is 11100105547. The next prime is 11100105553. The reversal of 11100105550 is 5550100111.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (11100105547) and next prime (11100105553).

It is a super-2 number, since 2×11100105550² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11100105553) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 604216 + ... + 622315.

It is an arithmetic number, because the mean of its divisors is an integer number (865011693).

Almost surely, 2^11100105550 is an apocalyptic number.

11100105550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11100105550 is a deficient number, since it is larger than the sum of its proper divisors (9660175082).

11100105550 is a wasteful number, since it uses less digits than its factorization.

11100105550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226724 (or 1226719 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 19.

Adding to 11100105550 its reverse (5550100111), we get a palindrome (16650205661).

The spelling of 11100105550 in words is "eleven billion, one hundred million, one hundred five thousand, five hundred fifty".