1101132121 has 16 divisors (see below), whose sum is σ = 1189214208. Its totient is φ = 1017446400.

The previous prime is 1101132101. The next prime is 1101132127. The reversal of 1101132121 is 1212311011.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1101132121 - 2¹¹ = 1101130073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1101132127) 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, 50521 + ... + 68953.

It is an arithmetic number, because the mean of its divisors is an integer number (74325888).

Almost surely, 2^1101132121 is an apocalyptic number.

It is an amenable number.

1101132121 is a deficient number, since it is larger than the sum of its proper divisors (88082087).

1101132121 is a wasteful number, since it uses less digits than its factorization.

1101132121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18552.

The product of its (nonzero) digits is 12, while the sum is 13.

The square root of 1101132121 is about 33183.3108806219. The cubic root of 1101132121 is about 1032.6341352427.

Adding to 1101132121 its reverse (1212311011), we get a palindrome (2313443132).

The spelling of 1101132121 in words is "one billion, one hundred one million, one hundred thirty-two thousand, one hundred twenty-one".