210220203829 has 2 divisors, whose sum is σ = 210220203830. Its totient is φ = 210220203828.

The previous prime is 210220203793. The next prime is 210220203841. The reversal of 210220203829 is 928302022012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177829203204 + 32391000625 = 421698^2 + 179975^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220203829 - 2²³ = 210211815221 is a prime.

It is a super-2 number, since 2×210220203829² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 210220203829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210220203889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110101914 + 105110101915.

It is an arithmetic number, because the mean of its divisors is an integer number (105110101915).

Almost surely, 2^210220203829 is an apocalyptic number.

It is an amenable number.

210220203829 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220203829 is an equidigital number, since it uses as much as digits as its factorization.

210220203829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 210220203829 in words is "two hundred ten billion, two hundred twenty million, two hundred three thousand, eight hundred twenty-nine".