221367068145 has 12 divisors (see below), whose sum is σ = 383702918196. Its totient is φ = 118062436320.

The previous prime is 221367068141. The next prime is 221367068149. The reversal of 221367068145 is 541860763122.

221367068145 is a `hidden beast` number, since 221 + 367 + 0 + 68 + 1 + 4 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (221367068141) and next prime (221367068149).

It can be written as a sum of positive squares in 2 ways, for example, as 120647159649 + 100719908496 = 347343^2 + 317364^2 .

It is not a de Polignac number, because 221367068145 - 2² = 221367068141 is a prime.

It is a super-2 number, since 2×221367068145² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 4919268181 = 221367068145 / (2 + 2 + 1 + 3 + 6 + 7 + 0 + 6 + 8 + 1 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 221367068145.

It is not an unprimeable number, because it can be changed into a prime (221367068141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2459634046 + ... + 2459634135.

It is an arithmetic number, because the mean of its divisors is an integer number (31975243183).

Almost surely, 2^221367068145 is an apocalyptic number.

It is an amenable number.

221367068145 is a deficient number, since it is larger than the sum of its proper divisors (162335850051).

221367068145 is a wasteful number, since it uses less digits than its factorization.

221367068145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919268192 (or 4919268189 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 221367068145 in words is "two hundred twenty-one billion, three hundred sixty-seven million, sixty-eight thousand, one hundred forty-five".