1124121121 has 2 divisors, whose sum is σ = 1124121122. Its totient is φ = 1124121120.

The previous prime is 1124121083. The next prime is 1124121139. The reversal of 1124121121 is 1211214211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 599711121 + 524410000 = 24489^2 + 22900^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124121121 - 2²⁷ = 989903393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1124121095 and 1124121104.

It is not a weakly prime, because it can be changed into another prime (1124121151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562060560 + 562060561.

It is an arithmetic number, because the mean of its divisors is an integer number (562060561).

Almost surely, 2^1124121121 is an apocalyptic number.

It is an amenable number.

1124121121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124121121 is an equidigital number, since it uses as much as digits as its factorization.

1124121121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32, while the sum is 16.

The square root of 1124121121 is about 33527.9155480922. The cubic root of 1124121121 is about 1039.7710051169.

Adding to 1124121121 its reverse (1211214211), we get a palindrome (2335335332).

The spelling of 1124121121 in words is "one billion, one hundred twenty-four million, one hundred twenty-one thousand, one hundred twenty-one".