21130201211213 has 8 divisors (see below), whose sum is σ = 21529022899608. Its totient is φ = 20731384657984.

The previous prime is 21130201211167. The next prime is 21130201211219. The reversal of 21130201211213 is 31211210203112.

It can be written as a sum of positive squares in 4 ways, for example, as 10577598391684 + 10552602819529 = 3252322^2 + 3248477^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21130201211213 - 2⁶ = 21130201211149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21130201211219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7597931 + ... + 9999447.

It is an arithmetic number, because the mean of its divisors is an integer number (2691127862451).

Almost surely, 2^{21130201211213} is an apocalyptic number.

It is an amenable number.

21130201211213 is a deficient number, since it is larger than the sum of its proper divisors (398821688395).

21130201211213 is a wasteful number, since it uses less digits than its factorization.

21130201211213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567583.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21130201211213 its reverse (31211210203112), we get a palindrome (52341411414325).

It can be divided in two parts, 2113020 and 1211213, that added together give a palindrome (3324233).

The spelling of 21130201211213 in words is "twenty-one trillion, one hundred thirty billion, two hundred one million, two hundred eleven thousand, two hundred thirteen".