121345404223 has 2 divisors, whose sum is σ = 121345404224. Its totient is φ = 121345404222.

The previous prime is 121345404211. The next prime is 121345404239. The reversal of 121345404223 is 322404543121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121345404223 - 2¹³ = 121345396031 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121345404023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60672702111 + 60672702112.

It is an arithmetic number, because the mean of its divisors is an integer number (60672702112).

Almost surely, 2^121345404223 is an apocalyptic number.

121345404223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121345404223 is an equidigital number, since it uses as much as digits as its factorization.

121345404223 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 121345404223 its reverse (322404543121), we get a palindrome (443749947344).

The spelling of 121345404223 in words is "one hundred twenty-one billion, three hundred forty-five million, four hundred four thousand, two hundred twenty-three".