213102103003021 has 16 divisors (see below), whose sum is σ = 214697661534720. Its totient is φ = 211512590593920.

The previous prime is 213102103003003. The next prime is 213102103003033. The reversal of 213102103003021 is 120300301201312.

It is a cyclic number.

It is not a de Polignac number, because 213102103003021 - 2¹³ = 213102102994829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 213102103003021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213102103003001) 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, 574931665 + ... + 575302201.

It is an arithmetic number, because the mean of its divisors is an integer number (13418603845920).

Almost surely, 2^{213102103003021} is an apocalyptic number.

It is an amenable number.

213102103003021 is a deficient number, since it is larger than the sum of its proper divisors (1595558531699).

213102103003021 is a wasteful number, since it uses less digits than its factorization.

213102103003021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 378684.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 213102103003021 its reverse (120300301201312), we get a palindrome (333402404204333).

The spelling of 213102103003021 in words is "two hundred thirteen trillion, one hundred two billion, one hundred three million, three thousand, twenty-one".