1210000213 has 4 divisors (see below), whose sum is σ = 1222474540. Its totient is φ = 1197525888.

The previous prime is 1210000189. The next prime is 1210000219. The reversal of 1210000213 is 3120000121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3120000121 = 7 ⋅445714303.

It can be written as a sum of positive squares in 2 ways, for example, as 638168644 + 571831569 = 25262^2 + 23913^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210000213 - 2²¹ = 1207903061 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 1210000213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210000219) 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, 6237018 + ... + 6237211.

It is an arithmetic number, because the mean of its divisors is an integer number (305618635).

Almost surely, 2^1210000213 is an apocalyptic number.

It is an amenable number.

1210000213 is a deficient number, since it is larger than the sum of its proper divisors (12474327).

1210000213 is an equidigital number, since it uses as much as digits as its factorization.

1210000213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12474326.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1210000213 is about 34785.0573235118. The cubic root of 1210000213 is about 1065.6022992937.

Adding to 1210000213 its reverse (3120000121), we get a palindrome (4330000334).

The spelling of 1210000213 in words is "one billion, two hundred ten million, two hundred thirteen", and thus it is an aban number.