213120101003 has 4 divisors (see below), whose sum is σ = 213121133280. Its totient is φ = 213119068728.

The previous prime is 213120100979. The next prime is 213120101023. The reversal of 213120101003 is 300101021312.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 213120101003 - 2²⁴ = 213103323787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213120101023) 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, 88163 + ... + 658796.

It is an arithmetic number, because the mean of its divisors is an integer number (53280283320).

Almost surely, 2^213120101003 is an apocalyptic number.

213120101003 is a deficient number, since it is larger than the sum of its proper divisors (1032277).

213120101003 is an equidigital number, since it uses as much as digits as its factorization.

213120101003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032276.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 213120101003 its reverse (300101021312), we get a palindrome (513221122315).

The spelling of 213120101003 in words is "two hundred thirteen billion, one hundred twenty million, one hundred one thousand, three".