2221436156 has 12 divisors (see below), whose sum is σ = 3888052392. Its totient is φ = 1110564048.

The previous prime is 2221436089. The next prime is 2221436159. The reversal of 2221436156 is 6516341222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221436159) 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, 2270 + ... + 66693.

It is an arithmetic number, because the mean of its divisors is an integer number (324004366).

Almost surely, 2^2221436156 is an apocalyptic number.

It is an amenable number.

2221436156 is a deficient number, since it is larger than the sum of its proper divisors (1666616236).

2221436156 is a wasteful number, since it uses less digits than its factorization.

2221436156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77020 (or 77018 counting only the distinct ones).

The product of its digits is 17280, while the sum is 32.

The square root of 2221436156 is about 47132.1138503250. The cubic root of 2221436156 is about 1304.8019949827.

Adding to 2221436156 its reverse (6516341222), we get a palindrome (8737777378).

The spelling of 2221436156 in words is "two billion, two hundred twenty-one million, four hundred thirty-six thousand, one hundred fifty-six".