1124201021 has 2 divisors, whose sum is σ = 1124201022. Its totient is φ = 1124201020.

The previous prime is 1124200999. The next prime is 1124201051. The reversal of 1124201021 is 1201024211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1112222500 + 11978521 = 33350^2 + 3461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124201021 - 2¹⁰ = 1124199997 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1124200987 and 1124201005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1124201051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562100510 + 562100511.

It is an arithmetic number, because the mean of its divisors is an integer number (562100511).

Almost surely, 2^1124201021 is an apocalyptic number.

It is an amenable number.

1124201021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1124201021 is an equidigital number, since it uses as much as digits as its factorization.

1124201021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1124201021 is about 33529.1070713194. The cubic root of 1124201021 is about 1039.7956393945.

Adding to 1124201021 its reverse (1201024211), we get a palindrome (2325225232).

The spelling of 1124201021 in words is "one billion, one hundred twenty-four million, two hundred one thousand, twenty-one".