1212101001061 has 2 divisors, whose sum is σ = 1212101001062. Its totient is φ = 1212101001060.

The previous prime is 1212101001043. The next prime is 1212101001101. The reversal of 1212101001061 is 1601001012121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1159982850625 + 52118150436 = 1077025^2 + 228294^2 .

It is a cyclic number.

It is not a de Polignac number, because 1212101001061 - 2¹¹ = 1212100999013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1212101001161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606050500530 + 606050500531.

It is an arithmetic number, because the mean of its divisors is an integer number (606050500531).

Almost surely, 2^{1212101001061} is an apocalyptic number.

It is an amenable number.

1212101001061 is a deficient number, since it is larger than the sum of its proper divisors (1).

1212101001061 is an equidigital number, since it uses as much as digits as its factorization.

1212101001061 is an evil number, because the sum of its binary digits is even.

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

Adding to 1212101001061 its reverse (1601001012121), we get a palindrome (2813102013182).

The spelling of 1212101001061 in words is "one trillion, two hundred twelve billion, one hundred one million, one thousand, sixty-one".