1212200201081 has 2 divisors, whose sum is σ = 1212200201082. Its totient is φ = 1212200201080.

The previous prime is 1212200201063. The next prime is 1212200201119. The reversal of 1212200201081 is 1801020022121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 990303619600 + 221896581481 = 995140^2 + 471059^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212200201081 - 2¹⁴ = 1212200184697 is a prime.

It is a super-2 number, since 2×1212200201081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1212200201011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606100100540 + 606100100541.

It is an arithmetic number, because the mean of its divisors is an integer number (606100100541).

Almost surely, 2^{1212200201081} is an apocalyptic number.

It is an amenable number.

1212200201081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212200201081 is an equidigital number, since it uses as much as digits as its factorization.

1212200201081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 20.

The spelling of 1212200201081 in words is "one trillion, two hundred twelve billion, two hundred million, two hundred one thousand, eighty-one".