121311120001223 has 2 divisors, whose sum is σ = 121311120001224. Its totient is φ = 121311120001222.

The previous prime is 121311120001207. The next prime is 121311120001237. The reversal of 121311120001223 is 322100021113121.

It is a strong prime.

It is an emirp because it is prime and its reverse (322100021113121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121311120001223 - 2⁴ = 121311120001207 is a prime.

It is a super-2 number, since 2×121311120001223² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121311120001195 and 121311120001204.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121311120004223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60655560000611 + 60655560000612.

It is an arithmetic number, because the mean of its divisors is an integer number (60655560000612).

Almost surely, 2^{121311120001223} is an apocalyptic number.

121311120001223 is a deficient number, since it is larger than the sum of its proper divisors (1).

121311120001223 is an equidigital number, since it uses as much as digits as its factorization.

121311120001223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121311120001223 its reverse (322100021113121), we get a palindrome (443411141114344).

The spelling of 121311120001223 in words is "one hundred twenty-one trillion, three hundred eleven billion, one hundred twenty million, one thousand, two hundred twenty-three".