121121112263 has 2 divisors, whose sum is σ = 121121112264. Its totient is φ = 121121112262.

The previous prime is 121121112191. The next prime is 121121112271. The reversal of 121121112263 is 362211121121.

It is a strong prime.

It is an emirp because it is prime and its reverse (362211121121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121121112263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121117263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560556131 + 60560556132.

It is an arithmetic number, because the mean of its divisors is an integer number (60560556132).

Almost surely, 2^121121112263 is an apocalyptic number.

121121112263 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121112263 is an equidigital number, since it uses as much as digits as its factorization.

121121112263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 23.

Adding to 121121112263 its reverse (362211121121), we get a palindrome (483332233384).

The spelling of 121121112263 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, two hundred sixty-three".