221412104777345 has 4 divisors (see below), whose sum is σ = 265694525732820. Its totient is φ = 177129683821872.

The previous prime is 221412104777333. The next prime is 221412104777363. The reversal of 221412104777345 is 543777401214122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 68842399425424 + 152569705351921 = 8297132^2 + 12351911^2 .

It is a cyclic number.

It is not a de Polignac number, because 221412104777345 - 2²⁰ = 221412103728769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221412104777293 and 221412104777302.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22141210477730 + ... + 22141210477739.

It is an arithmetic number, because the mean of its divisors is an integer number (66423631433205).

Almost surely, 2^{221412104777345} is an apocalyptic number.

It is an amenable number.

221412104777345 is a deficient number, since it is larger than the sum of its proper divisors (44282420955475).

221412104777345 is an equidigital number, since it uses as much as digits as its factorization.

221412104777345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44282420955474.

The product of its (nonzero) digits is 2634240, while the sum is 50.

The spelling of 221412104777345 in words is "two hundred twenty-one trillion, four hundred twelve billion, one hundred four million, seven hundred seventy-seven thousand, three hundred forty-five".