2156223002 has 8 divisors (see below), whose sum is σ = 3234577536. Its totient is φ = 1078030492.

The previous prime is 2156223001. The next prime is 2156223029. The reversal of 2156223002 is 2003226512.

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

It is not an unprimeable number, because it can be changed into a prime (2156223001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1463 + ... + 65685.

It is an arithmetic number, because the mean of its divisors is an integer number (404322192).

Almost surely, 2^2156223002 is an apocalyptic number.

2156223002 is a deficient number, since it is larger than the sum of its proper divisors (1078354534).

2156223002 is a wasteful number, since it uses less digits than its factorization.

2156223002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81012.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2156223002 is about 46435.1483469150. The cubic root of 2156223002 is about 1291.9069211382.

Adding to 2156223002 its reverse (2003226512), we get a palindrome (4159449514).

The spelling of 2156223002 in words is "two billion, one hundred fifty-six million, two hundred twenty-three thousand, two".