121230030511 has 2 divisors, whose sum is σ = 121230030512. Its totient is φ = 121230030510.

The previous prime is 121230030353. The next prime is 121230030553. The reversal of 121230030511 is 115030032121.

It is a strong prime.

It is an emirp because it is prime and its reverse (115030032121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121230030511 is a prime.

It is a super-2 number, since 2×121230030511² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121230430511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60615015255 + 60615015256.

It is an arithmetic number, because the mean of its divisors is an integer number (60615015256).

Almost surely, 2^121230030511 is an apocalyptic number.

121230030511 is a deficient number, since it is larger than the sum of its proper divisors (1).

121230030511 is an equidigital number, since it uses as much as digits as its factorization.

121230030511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 121230030511 its reverse (115030032121), we get a palindrome (236260062632).

The spelling of 121230030511 in words is "one hundred twenty-one billion, two hundred thirty million, thirty thousand, five hundred eleven".