161211141 has 40 divisors (see below), whose sum is σ = 296409344. Its totient is φ = 85030560.

The previous prime is 161211131. The next prime is 161211151. The reversal of 161211141 is 141112161.

161211141 is a `hidden beast` number, since 1 + 612 + 1 + 11 + 41 = 666.

161211141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161211131) and next prime (161211151).

It is not a de Polignac number, because 161211141 - 2⁶ = 161211077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161211101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 3565 + ... + 18306.

Almost surely, 2^161211141 is an apocalyptic number.

It is an amenable number.

161211141 is a deficient number, since it is larger than the sum of its proper divisors (135198203).

161211141 is a wasteful number, since it uses less digits than its factorization.

161211141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21903 (or 21894 counting only the distinct ones).

The product of its digits is 48, while the sum is 18.

The square root of 161211141 is about 12696.8949353769. The cubic root of 161211141 is about 544.2498908249.

The spelling of 161211141 in words is "one hundred sixty-one million, two hundred eleven thousand, one hundred forty-one".