10111001121 has 24 divisors (see below), whose sum is σ = 16220153760. Its totient is φ = 6222151728.

The previous prime is 10111001081. The next prime is 10111001143. The reversal of 10111001121 is 12110011101.

It is not a de Polignac number, because 10111001121 - 2⁹ = 10111000609 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10111001161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1103371 + ... + 1112496.

It is an arithmetic number, because the mean of its divisors is an integer number (675839740).

Almost surely, 2^10111001121 is an apocalyptic number.

It is an amenable number.

10111001121 is a deficient number, since it is larger than the sum of its proper divisors (6109152639).

10111001121 is a wasteful number, since it uses less digits than its factorization.

10111001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2215902 (or 2215883 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10111001121 its reverse (12110011101), we get a palindrome (22221012222).

The spelling of 10111001121 in words is "ten billion, one hundred eleven million, one thousand, one hundred twenty-one".