2111365061 has 4 divisors (see below), whose sum is σ = 2273777772. Its totient is φ = 1948952352.

The previous prime is 2111365049. The next prime is 2111365079. The reversal of 2111365061 is 1605631112.

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

It can be written as a sum of positive squares in 2 ways, for example, as 606390625 + 1504974436 = 24625^2 + 38794^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2111365061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111365061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111364061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81206336 + ... + 81206361.

It is an arithmetic number, because the mean of its divisors is an integer number (568444443).

Almost surely, 2^2111365061 is an apocalyptic number.

It is an amenable number.

2111365061 is a deficient number, since it is larger than the sum of its proper divisors (162412711).

2111365061 is a wasteful number, since it uses less digits than its factorization.

2111365061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162412710.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 2111365061 is about 45949.5926097283. The cubic root of 2111365061 is about 1282.8851465966.

Adding to 2111365061 its reverse (1605631112), we get a palindrome (3716996173).

The spelling of 2111365061 in words is "two billion, one hundred eleven million, three hundred sixty-five thousand, sixty-one".