2221400999 has 8 divisors (see below), whose sum is σ = 2374055568. Its totient is φ = 2071189120.

The previous prime is 2221400983. The next prime is 2221401011. The reversal of 2221400999 is 9990041222.

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

It is a cyclic number.

It is not a de Polignac number, because 2221400999 - 2⁴ = 2221400983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221400939) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 608792 + ... + 612429.

It is an arithmetic number, because the mean of its divisors is an integer number (296756946).

Almost surely, 2^2221400999 is an apocalyptic number.

2221400999 is a deficient number, since it is larger than the sum of its proper divisors (152654569).

2221400999 is a wasteful number, since it uses less digits than its factorization.

2221400999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1221345.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 2221400999 is about 47131.7408865830. The cubic root of 2221400999 is about 1304.7951115730.

The spelling of 2221400999 in words is "two billion, two hundred twenty-one million, four hundred thousand, nine hundred ninety-nine".