1445377141221 has 16 divisors (see below), whose sum is σ = 2076242641536. Its totient is φ = 889107437376.

The previous prime is 1445377141163. The next prime is 1445377141231. The reversal of 1445377141221 is 1221417735441.

It is a happy number.

It is not a de Polignac number, because 1445377141221 - 2¹⁷ = 1445377010149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1445377141231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7305690 + ... + 7500923.

It is an arithmetic number, because the mean of its divisors is an integer number (129765165096).

Almost surely, 2^{1445377141221} is an apocalyptic number.

It is an amenable number.

1445377141221 is a deficient number, since it is larger than the sum of its proper divisors (630865500315).

1445377141221 is a wasteful number, since it uses less digits than its factorization.

1445377141221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14809132.

The product of its digits is 188160, while the sum is 42.

The spelling of 1445377141221 in words is "one trillion, four hundred forty-five billion, three hundred seventy-seven million, one hundred forty-one thousand, two hundred twenty-one".