121451442223 has 2 divisors, whose sum is σ = 121451442224. Its totient is φ = 121451442222.

The previous prime is 121451442163. The next prime is 121451442271. The reversal of 121451442223 is 322244154121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121451442223 - 2⁹ = 121451441711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121451445223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60725721111 + 60725721112.

It is an arithmetic number, because the mean of its divisors is an integer number (60725721112).

Almost surely, 2^121451442223 is an apocalyptic number.

121451442223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121451442223 is an equidigital number, since it uses as much as digits as its factorization.

121451442223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 31.

Adding to 121451442223 its reverse (322244154121), we get a palindrome (443695596344).

The spelling of 121451442223 in words is "one hundred twenty-one billion, four hundred fifty-one million, four hundred forty-two thousand, two hundred twenty-three".