1001213401 has 2 divisors, whose sum is σ = 1001213402. Its totient is φ = 1001213400.

The previous prime is 1001213393. The next prime is 1001213441. The reversal of 1001213401 is 1043121001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 618815376 + 382398025 = 24876^2 + 19555^2 .

It is a cyclic number.

It is not a de Polignac number, because 1001213401 - 2³ = 1001213393 is a prime.

It is not a weakly prime, because it can be changed into another prime (1001213441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500606700 + 500606701.

It is an arithmetic number, because the mean of its divisors is an integer number (500606701).

Almost surely, 2^1001213401 is an apocalyptic number.

It is an amenable number.

1001213401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1001213401 is an equidigital number, since it uses as much as digits as its factorization.

1001213401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1001213401 is about 31641.9563396450. The cubic root of 1001213401 is about 1000.4043035166.

Adding to 1001213401 its reverse (1043121001), we get a palindrome (2044334402).

The spelling of 1001213401 in words is "one billion, one million, two hundred thirteen thousand, four hundred one".