10621213 has 2 divisors, whose sum is σ = 10621214. Its totient is φ = 10621212.

The previous prime is 10621211. The next prime is 10621241. The reversal of 10621213 is 31212601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10582009 + 39204 = 3253^2 + 198^2 .

It is a cyclic number.

It is not a de Polignac number, because 10621213 - 2¹ = 10621211 is a prime.

It is a super-3 number, since 3×10621213³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 10621211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10621211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310606 + 5310607.

It is an arithmetic number, because the mean of its divisors is an integer number (5310607).

Almost surely, 2^10621213 is an apocalyptic number.

It is an amenable number.

10621213 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621213 is an equidigital number, since it uses as much as digits as its factorization.

10621213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 10621213 is about 3259.0202515480. The cubic root of 10621213 is about 219.8153616117.

Adding to 10621213 its reverse (31212601), we get a palindrome (41833814).

The spelling of 10621213 in words is "ten million, six hundred twenty-one thousand, two hundred thirteen".