2112121231211 has 2 divisors, whose sum is σ = 2112121231212. Its totient is φ = 2112121231210.

The previous prime is 2112121231201. The next prime is 2112121231277. The reversal of 2112121231211 is 1121321212112.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2112121231211 is a prime.

It is a super-2 number, since 2×2112121231211² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2112121231201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056060615605 + 1056060615606.

It is an arithmetic number, because the mean of its divisors is an integer number (1056060615606).

Almost surely, 2^{2112121231211} is an apocalyptic number.

2112121231211 is a deficient number, since it is larger than the sum of its proper divisors (1).

2112121231211 is an equidigital number, since it uses as much as digits as its factorization.

2112121231211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96, while the sum is 20.

Adding to 2112121231211 its reverse (1121321212112), we get a palindrome (3233442443323).

The spelling of 2112121231211 in words is "two trillion, one hundred twelve billion, one hundred twenty-one million, two hundred thirty-one thousand, two hundred eleven".