1232101021 has 2 divisors, whose sum is σ = 1232101022. Its totient is φ = 1232101020.

The previous prime is 1232101001. The next prime is 1232101043. The reversal of 1232101021 is 1201012321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 978813796 + 253287225 = 31286^2 + 15915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1232101021 - 2¹⁹ = 1231576733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1232100992 and 1232101010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1232101001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616050510 + 616050511.

It is an arithmetic number, because the mean of its divisors is an integer number (616050511).

Almost surely, 2^1232101021 is an apocalyptic number.

It is an amenable number.

1232101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1232101021 is an equidigital number, since it uses as much as digits as its factorization.

1232101021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1232101021 is about 35101.2965714943. The cubic root of 1232101021 is about 1072.0509824481.

Adding to 1232101021 its reverse (1201012321), we get a palindrome (2433113342).

The spelling of 1232101021 in words is "one billion, two hundred thirty-two million, one hundred one thousand, twenty-one".