2111561216150 has 48 divisors (see below), whose sum is σ = 4134689269200. Its totient is φ = 800078693760.

The previous prime is 2111561216129. The next prime is 2111561216159. The reversal of 2111561216150 is 516121651112.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111561216159) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8454464 + ... + 8700636.

It is an arithmetic number, because the mean of its divisors is an integer number (86139359775).

Almost surely, 2^{2111561216150} is an apocalyptic number.

2111561216150 is a deficient number, since it is larger than the sum of its proper divisors (2023128053050).

2111561216150 is a wasteful number, since it uses less digits than its factorization.

2111561216150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255233 (or 255228 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 32.

Adding to 2111561216150 its reverse (516121651112), we get a palindrome (2627682867262).

The spelling of 2111561216150 in words is "two trillion, one hundred eleven billion, five hundred sixty-one million, two hundred sixteen thousand, one hundred fifty".