2213451236 has 12 divisors (see below), whose sum is σ = 3879300012. Its totient is φ = 1105079808.

The previous prime is 2213451223. The next prime is 2213451263. The reversal of 2213451236 is 6321543122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1377894400 + 835556836 = 37120^2 + 28906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2213451199 and 2213451208.

It is an unprimeable number.

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, 408425 + ... + 413808.

It is an arithmetic number, because the mean of its divisors is an integer number (323275001).

Almost surely, 2^2213451236 is an apocalyptic number.

It is an amenable number.

2213451236 is a deficient number, since it is larger than the sum of its proper divisors (1665848776).

2213451236 is a wasteful number, since it uses less digits than its factorization.

2213451236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822910 (or 822908 counting only the distinct ones).

The product of its digits is 8640, while the sum is 29.

The square root of 2213451236 is about 47047.3297435678. The cubic root of 2213451236 is about 1303.2367541299.

Adding to 2213451236 its reverse (6321543122), we get a palindrome (8534994358).

The spelling of 2213451236 in words is "two billion, two hundred thirteen million, four hundred fifty-one thousand, two hundred thirty-six".