1100555511102 has 128 divisors (see below), whose sum is σ = 2567116800000. Its totient is φ = 349044909696.

The previous prime is 1100555511071. The next prime is 1100555511113. The reversal of 1100555511102 is 2011155550011.

It is a happy number.

1100555511102 is a `hidden beast` number, since 1 + 1 + 0 + 0 + 5 + 5 + 551 + 1 + 102 = 666.

It is a super-2 number, since 2×1100555511102² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 29614849 + ... + 29651987.

It is an arithmetic number, because the mean of its divisors is an integer number (20055600000).

Almost surely, 2^{1100555511102} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1100555511102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1283558400000).

1100555511102 is an abundant number, since it is smaller than the sum of its proper divisors (1466561288898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1100555511102 is a wasteful number, since it uses less digits than its factorization.

1100555511102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37455 (or 37449 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 27.

The spelling of 1100555511102 in words is "one trillion, one hundred billion, five hundred fifty-five million, five hundred eleven thousand, one hundred two".