1111051005550 has 48 divisors (see below), whose sum is σ = 2073782863152. Its totient is φ = 442866700800.

The previous prime is 1111051005539. The next prime is 1111051005583. The reversal of 1111051005550 is 555001501111.

It is a super-2 number, since 2×1111051005550² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107644390 + ... + 107654710.

It is an arithmetic number, because the mean of its divisors is an integer number (43203809649).

Almost surely, 2^{1111051005550} is an apocalyptic number.

1111051005550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111051005550 is a deficient number, since it is larger than the sum of its proper divisors (962731857602).

1111051005550 is a wasteful number, since it uses less digits than its factorization.

1111051005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17653 (or 17648 counting only the distinct ones).

The product of its (nonzero) digits is 625, while the sum is 25.

Adding to 1111051005550 its reverse (555001501111), we get a palindrome (1666052506661).

The spelling of 1111051005550 in words is "one trillion, one hundred eleven billion, fifty-one million, five thousand, five hundred fifty".