2221149555 has 24 divisors (see below), whose sum is σ = 3863618928. Its totient is φ = 1180420416.

The previous prime is 2221149551. The next prime is 2221149559. The reversal of 2221149555 is 5559411222.

It is an interprime number because it is at equal distance from previous prime (2221149551) and next prime (2221149559).

It is not a de Polignac number, because 2221149555 - 2² = 2221149551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2221149551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74472 + ... + 99941.

It is an arithmetic number, because the mean of its divisors is an integer number (160984122).

Almost surely, 2^2221149555 is an apocalyptic number.

2221149555 is a deficient number, since it is larger than the sum of its proper divisors (1642469373).

2221149555 is a wasteful number, since it uses less digits than its factorization.

2221149555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174707 (or 174704 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

The square root of 2221149555 is about 47129.0733518070. The cubic root of 2221149555 is about 1304.7458790869.

The spelling of 2221149555 in words is "two billion, two hundred twenty-one million, one hundred forty-nine thousand, five hundred fifty-five".