121121112103 has 2 divisors, whose sum is σ = 121121112104. Its totient is φ = 121121112102.

The previous prime is 121121112071. The next prime is 121121112121. The reversal of 121121112103 is 301211121121.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (301211121121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121121112103 - 2⁵ = 121121112071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121112143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60560556051 + 60560556052.

It is an arithmetic number, because the mean of its divisors is an integer number (60560556052).

Almost surely, 2^121121112103 is an apocalyptic number.

121121112103 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121112103 is an equidigital number, since it uses as much as digits as its factorization.

121121112103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121121112103 its reverse (301211121121), we get a palindrome (422332233224).

The spelling of 121121112103 in words is "one hundred twenty-one billion, one hundred twenty-one million, one hundred twelve thousand, one hundred three".