1445220201 has 16 divisors (see below), whose sum is σ = 2068265664. Its totient is φ = 894380544.

The previous prime is 1445220173. The next prime is 1445220229. The reversal of 1445220201 is 1020225441.

It is an interprime number because it is at equal distance from previous prime (1445220173) and next prime (1445220229).

It is not a de Polignac number, because 1445220201 - 2¹¹ = 1445218153 is a prime.

It is a super-2 number, since 2×1445220201² = 4177322858756960802, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1445220251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190371 + ... + 197816.

It is an arithmetic number, because the mean of its divisors is an integer number (129266604).

Almost surely, 2^1445220201 is an apocalyptic number.

It is an amenable number.

1445220201 is a deficient number, since it is larger than the sum of its proper divisors (623045463).

1445220201 is a wasteful number, since it uses less digits than its factorization.

1445220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388280.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 1445220201 is about 38016.0518860126. The cubic root of 1445220201 is about 1130.6061438526.

Adding to 1445220201 its reverse (1020225441), we get a palindrome (2465445642).

The spelling of 1445220201 in words is "one billion, four hundred forty-five million, two hundred twenty thousand, two hundred one".