2261212393 has 4 divisors (see below), whose sum is σ = 2466777168. Its totient is φ = 2055647620.

The previous prime is 2261212391. The next prime is 2261212403. The reversal of 2261212393 is 3932121622.

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 2261212393 - 2¹ = 2261212391 is a prime.

It is a super-2 number, since 2×2261212393² = 10226162972513572898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2261212391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102782371 + ... + 102782392.

It is an arithmetic number, because the mean of its divisors is an integer number (616694292).

Almost surely, 2^2261212393 is an apocalyptic number.

It is an amenable number.

2261212393 is a deficient number, since it is larger than the sum of its proper divisors (205564775).

2261212393 is a wasteful number, since it uses less digits than its factorization.

2261212393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205564774.

The product of its digits is 7776, while the sum is 31.

The square root of 2261212393 is about 47552.2070255419. The cubic root of 2261212393 is about 1312.5437420101.

The spelling of 2261212393 in words is "two billion, two hundred sixty-one million, two hundred twelve thousand, three hundred ninety-three".