2156212246 has 8 divisors (see below), whose sum is σ = 3248442720. Its totient is φ = 1073398008.

The previous prime is 2156212231. The next prime is 2156212301. The reversal of 2156212246 is 6422126512.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353486 + ... + 2354401.

It is an arithmetic number, because the mean of its divisors is an integer number (406055340).

Almost surely, 2^2156212246 is an apocalyptic number.

2156212246 is a deficient number, since it is larger than the sum of its proper divisors (1092230474).

2156212246 is a wasteful number, since it uses less digits than its factorization.

2156212246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4708118.

The product of its digits is 11520, while the sum is 31.

The square root of 2156212246 is about 46435.0325293307. The cubic root of 2156212246 is about 1291.9047729723.

Adding to 2156212246 its reverse (6422126512), we get a palindrome (8578338758).

The spelling of 2156212246 in words is "two billion, one hundred fifty-six million, two hundred twelve thousand, two hundred forty-six".