2221487353609 has 8 divisors (see below), whose sum is σ = 2267274095240. Its totient is φ = 2176002835200.

The previous prime is 2221487353549. The next prime is 2221487353633. The reversal of 2221487353609 is 9063537841222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21382627984 + 2200104725625 = 146228^2 + 1483275^2 .

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 2221487353609 - 2¹⁹ = 2221486829321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221487353409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75540954 + ... + 75570355.

It is an arithmetic number, because the mean of its divisors is an integer number (283409261905).

It is a 1-persistent number, because it is pandigital, but 2⋅2221487353609 = 4442974707218 is not.

Almost surely, 2^{2221487353609} is an apocalyptic number.

It is an amenable number.

2221487353609 is a deficient number, since it is larger than the sum of its proper divisors (45786741631).

2221487353609 is a wasteful number, since it uses less digits than its factorization.

2221487353609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151111611.

The product of its (nonzero) digits is 4354560, while the sum is 52.

It can be divided in two parts, 222148 and 7353609, that added together give a palindrome (7575757).

The spelling of 2221487353609 in words is "two trillion, two hundred twenty-one billion, four hundred eighty-seven million, three hundred fifty-three thousand, six hundred nine".