20121330312011 has 2 divisors, whose sum is σ = 20121330312012. Its totient is φ = 20121330312010.

The previous prime is 20121330311959. The next prime is 20121330312059. The reversal of 20121330312011 is 11021303312102.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20121330312011 - 2³⁰ = 20120256570187 is a prime.

It is a super-2 number, since 2×20121330312011² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20121330312071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060665156005 + 10060665156006.

It is an arithmetic number, because the mean of its divisors is an integer number (10060665156006).

Almost surely, 2^{20121330312011} is an apocalyptic number.

20121330312011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20121330312011 is an equidigital number, since it uses as much as digits as its factorization.

20121330312011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 20121330312011 its reverse (11021303312102), we get a palindrome (31142633624113).

The spelling of 20121330312011 in words is "twenty trillion, one hundred twenty-one billion, three hundred thirty million, three hundred twelve thousand, eleven".