1212646462121 has 2 divisors, whose sum is σ = 1212646462122. Its totient is φ = 1212646462120.

The previous prime is 1212646462117. The next prime is 1212646462177.

1212646462121 is nontrivially palindromic in base 10.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 688586295721 + 524060166400 = 829811^2 + 723920^2 .

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 1212646462121 - 2² = 1212646462117 is a prime.

It is a super-2 number, since 2×1212646462121² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212646462421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606323231060 + 606323231061.

It is an arithmetic number, because the mean of its divisors is an integer number (606323231061).

Almost surely, 2^{1212646462121} is an apocalyptic number.

It is an amenable number.

1212646462121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212646462121 is an equidigital number, since it uses as much as digits as its factorization.

1212646462121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The spelling of 1212646462121 in words is "one trillion, two hundred twelve billion, six hundred forty-six million, four hundred sixty-two thousand, one hundred twenty-one".