30312011121211 has 2 divisors, whose sum is σ = 30312011121212. Its totient is φ = 30312011121210.

The previous prime is 30312011121199. The next prime is 30312011121233. The reversal of 30312011121211 is 11212111021303.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30312011121211 - 2⁷ = 30312011121083 is a prime.

It is not a weakly prime, because it can be changed into another prime (30312011121311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15156005560605 + 15156005560606.

It is an arithmetic number, because the mean of its divisors is an integer number (15156005560606).

Almost surely, 2^{30312011121211} is an apocalyptic number.

30312011121211 is a deficient number, since it is larger than the sum of its proper divisors (1).

30312011121211 is an equidigital number, since it uses as much as digits as its factorization.

30312011121211 is an evil number, because the sum of its binary digits is even.

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

Adding to 30312011121211 its reverse (11212111021303), we get a palindrome (41524122142514).

The spelling of 30312011121211 in words is "thirty trillion, three hundred twelve billion, eleven million, one hundred twenty-one thousand, two hundred eleven".