121420523233 has 2 divisors, whose sum is σ = 121420523234. Its totient is φ = 121420523232.

The previous prime is 121420523221. The next prime is 121420523239. The reversal of 121420523233 is 332325024121.

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., 61627069504 + 59793453729 = 248248^2 + 244527^2 .

It is a cyclic number.

It is not a de Polignac number, because 121420523233 - 2¹⁷ = 121420392161 is a prime.

It is not a weakly prime, because it can be changed into another prime (121420523239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60710261616 + 60710261617.

It is an arithmetic number, because the mean of its divisors is an integer number (60710261617).

Almost surely, 2^121420523233 is an apocalyptic number.

It is an amenable number.

121420523233 is a deficient number, since it is larger than the sum of its proper divisors (1).

121420523233 is an equidigital number, since it uses as much as digits as its factorization.

121420523233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 121420523233 its reverse (332325024121), we get a palindrome (453745547354).

The spelling of 121420523233 in words is "one hundred twenty-one billion, four hundred twenty million, five hundred twenty-three thousand, two hundred thirty-three".