121232021 has 2 divisors, whose sum is σ = 121232022. Its totient is φ = 121232020.

The previous prime is 121232009. The next prime is 121232029. The reversal of 121232021 is 120232121.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 108451396 + 12780625 = 10414^2 + 3575^2 .

It is a cyclic number.

It is not a de Polignac number, because 121232021 - 2¹⁴ = 121215637 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 = 121231987 and 121232005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121232029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60616010 + 60616011.

It is an arithmetic number, because the mean of its divisors is an integer number (60616011).

Almost surely, 2^121232021 is an apocalyptic number.

It is an amenable number.

121232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121232021 is an equidigital number, since it uses as much as digits as its factorization.

121232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121232021 is about 11010.5413581713. The cubic root of 121232021 is about 494.9246846606.

Adding to 121232021 its reverse (120232121), we get a palindrome (241464142).

It can be divided in two parts, 1212 and 32021, that added together give a palindrome (33233).

The spelling of 121232021 in words is "one hundred twenty-one million, two hundred thirty-two thousand, twenty-one".