1212112211953 has 2 divisors, whose sum is σ = 1212112211954. Its totient is φ = 1212112211952.

The previous prime is 1212112211951. The next prime is 1212112212029. The reversal of 1212112211953 is 3591122112121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191966099984 + 20146111969 = 1091772^2 + 141937^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212112211953 - 2¹ = 1212112211951 is a prime.

Together with 1212112211951, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1212112211951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606056105976 + 606056105977.

It is an arithmetic number, because the mean of its divisors is an integer number (606056105977).

Almost surely, 2^{1212112211953} is an apocalyptic number.

It is an amenable number.

1212112211953 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212112211953 is an equidigital number, since it uses as much as digits as its factorization.

1212112211953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 31.

The spelling of 1212112211953 in words is "one trillion, two hundred twelve billion, one hundred twelve million, two hundred eleven thousand, nine hundred fifty-three".