2123218711 has 8 divisors (see below), whose sum is σ = 2216805984. Its totient is φ = 2029737600.

The previous prime is 2123218709. The next prime is 2123218733. The reversal of 2123218711 is 1178123212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2123218711 - 2¹ = 2123218709 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 2123218711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123218751) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15795 + ... + 67051.

It is an arithmetic number, because the mean of its divisors is an integer number (277100748).

Almost surely, 2^2123218711 is an apocalyptic number.

2123218711 is a deficient number, since it is larger than the sum of its proper divisors (93587273).

2123218711 is a wasteful number, since it uses less digits than its factorization.

2123218711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53081.

The product of its digits is 1344, while the sum is 28.

The square root of 2123218711 is about 46078.3974439216. The cubic root of 2123218711 is about 1285.2814638783.

The spelling of 2123218711 in words is "two billion, one hundred twenty-three million, two hundred eighteen thousand, seven hundred eleven".