1111132121 has 16 divisors (see below), whose sum is σ = 1307674368. Its totient is φ = 932755200.

The previous prime is 1111132097. The next prime is 1111132133. The reversal of 1111132121 is 1212311111.

1111132121 = 2344² + 2345² + ... + 2530².

It is a cyclic number.

It is not a de Polignac number, because 1111132121 - 2¹⁰ = 1111131097 is a prime.

It is a super-2 number, since 2×1111132121² = 2469229180635917282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1111132096 and 1111132105.

It is not an unprimeable number, because it can be changed into a prime (1111132151) 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, 46145 + ... + 65966.

It is an arithmetic number, because the mean of its divisors is an integer number (81729648).

Almost surely, 2^1111132121 is an apocalyptic number.

1111132121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1111132121 is a deficient number, since it is larger than the sum of its proper divisors (196542247).

1111132121 is a wasteful number, since it uses less digits than its factorization.

1111132121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112192.

The product of its digits is 12, while the sum is 14.

The square root of 1111132121 is about 33333.6484801769. The cubic root of 1111132121 is about 1035.7506968711.

Adding to 1111132121 its reverse (1212311111), we get a palindrome (2323443232).

The spelling of 1111132121 in words is "one billion, one hundred eleven million, one hundred thirty-two thousand, one hundred twenty-one".