1004121211 has 4 divisors (see below), whose sum is σ = 1009669024. Its totient is φ = 998573400.

The previous prime is 1004121203. The next prime is 1004121227. The reversal of 1004121211 is 1121214001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121214001 = 2621 ⋅427781.

It is a cyclic number.

It is not a de Polignac number, because 1004121211 - 2³ = 1004121203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1004121191 and 1004121200.

It is not an unprimeable number, because it can be changed into a prime (1004121311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2773635 + ... + 2773996.

It is an arithmetic number, because the mean of its divisors is an integer number (252417256).

Almost surely, 2^1004121211 is an apocalyptic number.

1004121211 is a deficient number, since it is larger than the sum of its proper divisors (5547813).

1004121211 is an equidigital number, since it uses as much as digits as its factorization.

1004121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5547812.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 1004121211 is about 31687.8716704041. The cubic root of 1004121211 is about 1001.3718541556.

Adding to 1004121211 its reverse (1121214001), we get a palindrome (2125335212).

The spelling of 1004121211 in words is "one billion, four million, one hundred twenty-one thousand, two hundred eleven".