1611211111141 has 2 divisors, whose sum is σ = 1611211111142. Its totient is φ = 1611211111140.

The previous prime is 1611211111127. The next prime is 1611211111189. The reversal of 1611211111141 is 1411111121161.

It is a m-pointer prime, because the next prime (1611211111189) can be obtained adding 1611211111141 to its product of digits (48).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1011935402500 + 599275708641 = 1005950^2 + 774129^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1611211111141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1611211111121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 805605555570 + 805605555571.

It is an arithmetic number, because the mean of its divisors is an integer number (805605555571).

Almost surely, 2^{1611211111141} is an apocalyptic number.

It is an amenable number.

1611211111141 is a deficient number, since it is larger than the sum of its proper divisors (1).

1611211111141 is an equidigital number, since it uses as much as digits as its factorization.

1611211111141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48, while the sum is 22.

The spelling of 1611211111141 in words is "one trillion, six hundred eleven billion, two hundred eleven million, one hundred eleven thousand, one hundred forty-one".