2131221214 has 8 divisors (see below), whose sum is σ = 3197188008. Its totient is φ = 1065491880.

The previous prime is 2131221181. The next prime is 2131221217. The reversal of 2131221214 is 4121221312.

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

It is a junction number, because it is equal to n+sod(n) for n = 2131221191 and 2131221200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2131221217) 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, 34912 + ... + 74035.

It is an arithmetic number, because the mean of its divisors is an integer number (399648501).

Almost surely, 2^2131221214 is an apocalyptic number.

2131221214 is a deficient number, since it is larger than the sum of its proper divisors (1065966794).

2131221214 is a wasteful number, since it uses less digits than its factorization.

2131221214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118730.

The product of its digits is 192, while the sum is 19.

The square root of 2131221214 is about 46165.1515106362. The cubic root of 2131221214 is about 1286.8941998597.

Adding to 2131221214 its reverse (4121221312), we get a palindrome (6252442526).

The spelling of 2131221214 in words is "two billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred fourteen".