30212311121 has 2 divisors, whose sum is σ = 30212311122. Its totient is φ = 30212311120.

The previous prime is 30212311079. The next prime is 30212311123. The reversal of 30212311121 is 12111321203.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18268225600 + 11944085521 = 135160^2 + 109289^2 .

It is a cyclic number.

It is not a de Polignac number, because 30212311121 - 2¹⁴ = 30212294737 is a prime.

Together with 30212311123, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30212311121.

It is not a weakly prime, because it can be changed into another prime (30212311123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15106155560 + 15106155561.

It is an arithmetic number, because the mean of its divisors is an integer number (15106155561).

Almost surely, 2^30212311121 is an apocalyptic number.

It is an amenable number.

30212311121 is a deficient number, since it is larger than the sum of its proper divisors (1).

30212311121 is an equidigital number, since it uses as much as digits as its factorization.

30212311121 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 17.

Adding to 30212311121 its reverse (12111321203), we get a palindrome (42323632324).

The spelling of 30212311121 in words is "thirty billion, two hundred twelve million, three hundred eleven thousand, one hundred twenty-one".