233232011021 has 2 divisors, whose sum is σ = 233232011022. Its totient is φ = 233232011020.

The previous prime is 233232011009. The next prime is 233232011039. The reversal of 233232011021 is 120110232332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 223739406121 + 9492604900 = 473011^2 + 97430^2 .

It is a cyclic number.

It is not a de Polignac number, because 233232011021 - 2¹⁸ = 233231748877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 233232010984 and 233232011002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (233232011081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116616005510 + 116616005511.

It is an arithmetic number, because the mean of its divisors is an integer number (116616005511).

Almost surely, 2^233232011021 is an apocalyptic number.

It is an amenable number.

233232011021 is a deficient number, since it is larger than the sum of its proper divisors (1).

233232011021 is an equidigital number, since it uses as much as digits as its factorization.

233232011021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 233232011021 its reverse (120110232332), we get a palindrome (353342243353).

The spelling of 233232011021 in words is "two hundred thirty-three billion, two hundred thirty-two million, eleven thousand, twenty-one".