2121411766 has 4 divisors (see below), whose sum is σ = 3182117652. Its totient is φ = 1060705882.

The previous prime is 2121411713. The next prime is 2121411779. The reversal of 2121411766 is 6671141212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 530352940 + ... + 530352943.

It is an arithmetic number, because the mean of its divisors is an integer number (795529413).

Almost surely, 2^2121411766 is an apocalyptic number.

2121411766 is a deficient number, since it is larger than the sum of its proper divisors (1060705886).

2121411766 is a wasteful number, since it uses less digits than its factorization.

2121411766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060705885.

The product of its digits is 4032, while the sum is 31.

The square root of 2121411766 is about 46058.7859805271. The cubic root of 2121411766 is about 1284.9167515601.

Adding to 2121411766 its reverse (6671141212), we get a palindrome (8792552978).

The spelling of 2121411766 in words is "two billion, one hundred twenty-one million, four hundred eleven thousand, seven hundred sixty-six".