200022200002621 has 2 divisors, whose sum is σ = 200022200002622. Its totient is φ = 200022200002620.

The previous prime is 200022200002609. The next prime is 200022200002661. The reversal of 200022200002621 is 126200002220002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101144254702500 + 98877945300121 = 10057050^2 + 9943739^2 .

It is a cyclic number.

It is not a de Polignac number, because 200022200002621 - 2¹⁹ = 200022199478333 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200022200002661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100011100001310 + 100011100001311.

It is an arithmetic number, because the mean of its divisors is an integer number (100011100001311).

Almost surely, 2^{200022200002621} is an apocalyptic number.

It is an amenable number.

200022200002621 is a deficient number, since it is larger than the sum of its proper divisors (1).

200022200002621 is an equidigital number, since it uses as much as digits as its factorization.

200022200002621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 200022200002621 its reverse (126200002220002), we get a palindrome (326222202222623).

The spelling of 200022200002621 in words is "two hundred trillion, twenty-two billion, two hundred million, two thousand, six hundred twenty-one".