1210012213 has 8 divisors (see below), whose sum is σ = 1312438680. Its totient is φ = 1111057920.

The previous prime is 1210012187. The next prime is 1210012229. The reversal of 1210012213 is 3122100121.

It can be written as a sum of positive squares in 4 ways, for example, as 9597604 + 1200414609 = 3098^2 + 34647^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1210012213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1210012193 and 1210012202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1210012253) 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, 867318 + ... + 868711.

It is an arithmetic number, because the mean of its divisors is an integer number (164054835).

Almost surely, 2^1210012213 is an apocalyptic number.

It is an amenable number.

1210012213 is a deficient number, since it is larger than the sum of its proper divisors (102426467).

1210012213 is a wasteful number, since it uses less digits than its factorization.

1210012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736087.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1210012213 is about 34785.2298109413. The cubic root of 1210012213 is about 1065.6058219336.

Adding to 1210012213 its reverse (3122100121), we get a palindrome (4332112334).

The spelling of 1210012213 in words is "one billion, two hundred ten million, twelve thousand, two hundred thirteen".