1206101546621 has 2 divisors, whose sum is σ = 1206101546622. Its totient is φ = 1206101546620.

The previous prime is 1206101546599. The next prime is 1206101546623. The reversal of 1206101546621 is 1266451016021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 735349125625 + 470752420996 = 857525^2 + 686114^2 .

It is an emirp because it is prime and its reverse (1266451016021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1206101546621 - 2⁶ = 1206101546557 is a prime.

Together with 1206101546623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206101546623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603050773310 + 603050773311.

It is an arithmetic number, because the mean of its divisors is an integer number (603050773311).

Almost surely, 2^{1206101546621} is an apocalyptic number.

It is an amenable number.

1206101546621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206101546621 is an equidigital number, since it uses as much as digits as its factorization.

1206101546621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 1206101546621 in words is "one trillion, two hundred six billion, one hundred one million, five hundred forty-six thousand, six hundred twenty-one".