1210122213 has 4 divisors (see below), whose sum is σ = 1613496288. Its totient is φ = 806748140.

The previous prime is 1210122197. The next prime is 1210122229. The reversal of 1210122213 is 3122210121.

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: 3122210121 = 3 ⋅1040736707.

It is an interprime number because it is at equal distance from previous prime (1210122197) and next prime (1210122229).

It is a cyclic number.

It is not a de Polignac number, because 1210122213 - 2⁴ = 1210122197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1210122192 and 1210122201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210122283) 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, 201687033 + ... + 201687038.

It is an arithmetic number, because the mean of its divisors is an integer number (403374072).

Almost surely, 2^1210122213 is an apocalyptic number.

It is an amenable number.

1210122213 is a deficient number, since it is larger than the sum of its proper divisors (403374075).

1210122213 is an equidigital number, since it uses as much as digits as its factorization.

1210122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403374074.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1210122213 is about 34786.8109058591. The cubic root of 1210122213 is about 1065.6381117148.

Adding to 1210122213 its reverse (3122210121), we get a palindrome (4332332334).

The spelling of 1210122213 in words is "one billion, two hundred ten million, one hundred twenty-two thousand, two hundred thirteen".