1111002101 has 16 divisors (see below), whose sum is σ = 1225782720. Its totient is φ = 998565120.

The previous prime is 1111002091. The next prime is 1111002103. The reversal of 1111002101 is 1012001111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1111002101 - 2¹⁸ = 1110739957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111002103) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649235 + ... + 650943.

It is an arithmetic number, because the mean of its divisors is an integer number (76611420).

Almost surely, 2^1111002101 is an apocalyptic number.

1111002101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111002101 is a deficient number, since it is larger than the sum of its proper divisors (114780619).

1111002101 is a wasteful number, since it uses less digits than its factorization.

1111002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2356.

The product of its (nonzero) digits is 2, while the sum is 8.

The square root of 1111002101 is about 33331.6981415589. The cubic root of 1111002101 is about 1035.7102955674.

Adding to 1111002101 its reverse (1012001111), we get a palindrome (2123003212).

The spelling of 1111002101 in words is "one billion, one hundred eleven million, two thousand, one hundred one".