2206123537 has 4 divisors (see below), whose sum is σ = 2206264176. Its totient is φ = 2205982900.

The previous prime is 2206123529. The next prime is 2206123559. The reversal of 2206123537 is 7353216022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2206123537 - 2³ = 2206123529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2206123499 and 2206123508.

It is not an unprimeable number, because it can be changed into a prime (2206123567) 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, 43339 + ... + 79312.

It is an arithmetic number, because the mean of its divisors is an integer number (551566044).

Almost surely, 2^2206123537 is an apocalyptic number.

It is an amenable number.

2206123537 is a deficient number, since it is larger than the sum of its proper divisors (140639).

2206123537 is a wasteful number, since it uses less digits than its factorization.

2206123537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140638.

The product of its (nonzero) digits is 15120, while the sum is 31.

The square root of 2206123537 is about 46969.3893615831. The cubic root of 2206123537 is about 1301.7970289696.

Adding to 2206123537 its reverse (7353216022), we get a palindrome (9559339559).

The spelling of 2206123537 in words is "two billion, two hundred six million, one hundred twenty-three thousand, five hundred thirty-seven".