2126214565 has 32 divisors (see below), whose sum is σ = 2758613760. Its totient is φ = 1567325184.

The previous prime is 2126214557. The next prime is 2126214581. The reversal of 2126214565 is 5654126212.

It is a cyclic number.

It is not a de Polignac number, because 2126214565 - 2³ = 2126214557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2126214565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1468672 + ... + 1470118.

It is an arithmetic number, because the mean of its divisors is an integer number (86206680).

Almost surely, 2^2126214565 is an apocalyptic number.

It is an amenable number.

2126214565 is a deficient number, since it is larger than the sum of its proper divisors (632399195).

2126214565 is a wasteful number, since it uses less digits than its factorization.

2126214565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1821.

The product of its digits is 28800, while the sum is 34.

The square root of 2126214565 is about 46110.8942116719. The cubic root of 2126214565 is about 1285.8856889622.

The spelling of 2126214565 in words is "two billion, one hundred twenty-six million, two hundred fourteen thousand, five hundred sixty-five".