1212131201101 has 2 divisors, whose sum is σ = 1212131201102. Its totient is φ = 1212131201100.

The previous prime is 1212131201093. The next prime is 1212131201119. The reversal of 1212131201101 is 1011021312121.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1067297676201 + 144833524900 = 1033101^2 + 380570^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212131201101 - 2³ = 1212131201093 is a prime.

It is a super-2 number, since 2×1212131201101² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212131201161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606065600550 + 606065600551.

It is an arithmetic number, because the mean of its divisors is an integer number (606065600551).

Almost surely, 2^{1212131201101} is an apocalyptic number.

It is an amenable number.

1212131201101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212131201101 is an equidigital number, since it uses as much as digits as its factorization.

1212131201101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1212131201101 its reverse (1011021312121), we get a palindrome (2223152513222).

The spelling of 1212131201101 in words is "one trillion, two hundred twelve billion, one hundred thirty-one million, two hundred one thousand, one hundred one".