213103021009 has 4 divisors (see below), whose sum is σ = 213106078720. Its totient is φ = 213099963300.

The previous prime is 213103020979. The next prime is 213103021013. The reversal of 213103021009 is 900120301312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 213103021009 - 2⁷ = 213103020881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213103051009) 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, 1421817 + ... + 1564534.

It is an arithmetic number, because the mean of its divisors is an integer number (53276519680).

Almost surely, 2^213103021009 is an apocalyptic number.

It is an amenable number.

213103021009 is a deficient number, since it is larger than the sum of its proper divisors (3057711).

213103021009 is an equidigital number, since it uses as much as digits as its factorization.

213103021009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3057710.

The product of its (nonzero) digits is 324, while the sum is 22.

The spelling of 213103021009 in words is "two hundred thirteen billion, one hundred three million, twenty-one thousand, nine".