12210400213 has 4 divisors (see below), whose sum is σ = 13320436608. Its totient is φ = 11100363820.

The previous prime is 12210400211. The next prime is 12210400231. The reversal of 12210400213 is 31200401221.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31200401221 = 11 ⋅2836400111.

It is a cyclic number.

It is not a de Polignac number, because 12210400213 - 2¹ = 12210400211 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 (12210400211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555018181 + ... + 555018202.

It is an arithmetic number, because the mean of its divisors is an integer number (3330109152).

Almost surely, 2^12210400213 is an apocalyptic number.

It is an amenable number.

12210400213 is a deficient number, since it is larger than the sum of its proper divisors (1110036395).

12210400213 is a wasteful number, since it uses less digits than its factorization.

12210400213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1110036394.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12210400213 its reverse (31200401221), we get a palindrome (43410801434).

The spelling of 12210400213 in words is "twelve billion, two hundred ten million, four hundred thousand, two hundred thirteen".