2212322621 has 2 divisors, whose sum is σ = 2212322622. Its totient is φ = 2212322620.

The previous prime is 2212322617. The next prime is 2212322663. The reversal of 2212322621 is 1262232122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1527715396 + 684607225 = 39086^2 + 26165^2 .

It is a cyclic number.

It is not a de Polignac number, because 2212322621 - 2² = 2212322617 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2212322221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1106161310 + 1106161311.

It is an arithmetic number, because the mean of its divisors is an integer number (1106161311).

Almost surely, 2^2212322621 is an apocalyptic number.

It is an amenable number.

2212322621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2212322621 is an equidigital number, since it uses as much as digits as its factorization.

2212322621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1152, while the sum is 23.

The square root of 2212322621 is about 47035.3337502776. Note that the first 3 decimals coincide. The cubic root of 2212322621 is about 1303.0152143331.

Adding to 2212322621 its reverse (1262232122), we get a palindrome (3474554743).

It can be divided in two parts, 22123 and 22621, that added together give a palindrome (44744).

The spelling of 2212322621 in words is "two billion, two hundred twelve million, three hundred twenty-two thousand, six hundred twenty-one".