1350670221 has 10 divisors (see below), whose sum is σ = 2017667982. Its totient is φ = 900446760.

The previous prime is 1350670207. The next prime is 1350670229. The reversal of 1350670221 is 1220760531.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 840362121 + 510308100 = 28989^2 + 22590^2 .

It is not a de Polignac number, because 1350670221 - 2¹⁰ = 1350669197 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1350670229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 8337390 + ... + 8337551.

Almost surely, 2^1350670221 is an apocalyptic number.

It is an amenable number.

1350670221 is a deficient number, since it is larger than the sum of its proper divisors (666997761).

1350670221 is an equidigital number, since it uses as much as digits as its factorization.

1350670221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16674953 (or 16674944 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 1350670221 is about 36751.4655626140. The cubic root of 1350670221 is about 1105.3923167612.

The spelling of 1350670221 in words is "one billion, three hundred fifty million, six hundred seventy thousand, two hundred twenty-one".