1379108221 has 16 divisors (see below), whose sum is σ = 1537747200. Its totient is φ = 1230121728.

The previous prime is 1379108209. The next prime is 1379108233. The reversal of 1379108221 is 1228019731.

It is an interprime number because it is at equal distance from previous prime (1379108209) and next prime (1379108233).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1379108221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379108201) 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, 26440 + ... + 58798.

It is an arithmetic number, because the mean of its divisors is an integer number (96109200).

Almost surely, 2^1379108221 is an apocalyptic number.

It is an amenable number.

1379108221 is a deficient number, since it is larger than the sum of its proper divisors (158638979).

1379108221 is a wasteful number, since it uses less digits than its factorization.

1379108221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32508.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 1379108221 is about 37136.3463604055. The cubic root of 1379108221 is about 1113.0964110239.

The spelling of 1379108221 in words is "one billion, three hundred seventy-nine million, one hundred eight thousand, two hundred twenty-one".