1208448021 has 16 divisors (see below), whose sum is σ = 1759533120. Its totient is φ = 731646720.

The previous prime is 1208448001. The next prime is 1208448041.

1208448021 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (1208448001) and next prime (1208448041).

It is not a de Polignac number, because 1208448021 - 2⁹ = 1208447509 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1208448021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1208448001) 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, 15151 + ... + 51443.

It is an arithmetic number, because the mean of its divisors is an integer number (109970820).

Almost surely, 2^1208448021 is an apocalyptic number.

1208448021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1208448021 is a deficient number, since it is larger than the sum of its proper divisors (551085099).

1208448021 is a wasteful number, since it uses less digits than its factorization.

1208448021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37316.

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 1208448021 is about 34762.7389743674. The cubic root of 1208448021 is about 1065.1464516800.

The spelling of 1208448021 in words is "one billion, two hundred eight million, four hundred forty-eight thousand, twenty-one".