121121023300111 has 2 divisors, whose sum is σ = 121121023300112. Its totient is φ = 121121023300110.

The previous prime is 121121023300049. The next prime is 121121023300139. The reversal of 121121023300111 is 111003320121121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121121023300111 - 2²³ = 121121014911503 is a prime.

It is a super-2 number, since 2×121121023300111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121121023300811) 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, 60560511650055 + 60560511650056.

It is an arithmetic number, because the mean of its divisors is an integer number (60560511650056).

Almost surely, 2^{121121023300111} is an apocalyptic number.

121121023300111 is a deficient number, since it is larger than the sum of its proper divisors (1).

121121023300111 is an equidigital number, since it uses as much as digits as its factorization.

121121023300111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 121121023300111 its reverse (111003320121121), we get a palindrome (232124343421232).

The spelling of 121121023300111 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty-three million, three hundred thousand, one hundred eleven".