21220202359 has 2 divisors, whose sum is σ = 21220202360. Its totient is φ = 21220202358.

The previous prime is 21220202329. The next prime is 21220202369. The reversal of 21220202359 is 95320202212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21220202359 - 2¹³ = 21220194167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21220202329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10610101179 + 10610101180.

It is an arithmetic number, because the mean of its divisors is an integer number (10610101180).

Almost surely, 2^21220202359 is an apocalyptic number.

21220202359 is a deficient number, since it is larger than the sum of its proper divisors (1).

21220202359 is an equidigital number, since it uses as much as digits as its factorization.

21220202359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 28.

The spelling of 21220202359 in words is "twenty-one billion, two hundred twenty million, two hundred two thousand, three hundred fifty-nine".