1232011121 has 4 divisors (see below), whose sum is σ = 1344012144. Its totient is φ = 1120010100.

The previous prime is 1232011117. The next prime is 1232011127. The reversal of 1232011121 is 1211102321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1232011121 - 2² = 1232011117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1232011096 and 1232011105.

It is not an unprimeable number, because it can be changed into a prime (1232011127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56000495 + ... + 56000516.

It is an arithmetic number, because the mean of its divisors is an integer number (336003036).

Almost surely, 2^1232011121 is an apocalyptic number.

1232011121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1232011121 is a deficient number, since it is larger than the sum of its proper divisors (112001023).

1232011121 is a wasteful number, since it uses less digits than its factorization.

1232011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112001022.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 1232011121 is about 35100.0159686573. The cubic root of 1232011121 is about 1072.0249078200.

Adding to 1232011121 its reverse (1211102321), we get a palindrome (2443113442).

The spelling of 1232011121 in words is "one billion, two hundred thirty-two million, eleven thousand, one hundred twenty-one".