111010241661 has 24 divisors (see below), whose sum is σ = 165311964576. Its totient is φ = 65714271840.

The previous prime is 111010241651. The next prime is 111010241663. The reversal of 111010241661 is 166142010111.

It is not a de Polignac number, because 111010241661 - 2¹⁰ = 111010240637 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010241663) by changing a digit.

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, 848650 + ... + 970683.

It is an arithmetic number, because the mean of its divisors is an integer number (6887998524).

Almost surely, 2^111010241661 is an apocalyptic number.

111010241661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111010241661 is a deficient number, since it is larger than the sum of its proper divisors (54301722915).

111010241661 is a wasteful number, since it uses less digits than its factorization.

111010241661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1819433 (or 1819390 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 111010241661 its reverse (166142010111), we get a palindrome (277152251772).

The spelling of 111010241661 in words is "one hundred eleven billion, ten million, two hundred forty-one thousand, six hundred sixty-one".