2132222621 has 2 divisors, whose sum is σ = 2132222622. Its totient is φ = 2132222620.

The previous prime is 2132222611. The next prime is 2132222647. The reversal of 2132222621 is 1262222312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1763160100 + 369062521 = 41990^2 + 19211^2 .

It is a cyclic number.

It is not a de Polignac number, because 2132222621 - 2¹⁸ = 2131960477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2132222611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1066111310 + 1066111311.

It is an arithmetic number, because the mean of its divisors is an integer number (1066111311).

Almost surely, 2^2132222621 is an apocalyptic number.

It is an amenable number.

2132222621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2132222621 is an equidigital number, since it uses as much as digits as its factorization.

2132222621 is an evil number, because the sum of its binary digits is even.

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

The square root of 2132222621 is about 46175.9961560116. The cubic root of 2132222621 is about 1287.0957279885.

Adding to 2132222621 its reverse (1262222312), we get a palindrome (3394444933).

The spelling of 2132222621 in words is "two billion, one hundred thirty-two million, two hundred twenty-two thousand, six hundred twenty-one".