228219912829 has 2 divisors, whose sum is σ = 228219912830. Its totient is φ = 228219912828.

The previous prime is 228219912793. The next prime is 228219912839. The reversal of 228219912829 is 928219912822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224225925625 + 3993987204 = 473525^2 + 63198^2 .

It is a cyclic number.

It is not a de Polignac number, because 228219912829 - 2²⁵ = 228186358397 is a prime.

It is a super-2 number, since 2×228219912829² (a number of 24 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 228219912829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (228219912839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 114109956414 + 114109956415.

It is an arithmetic number, because the mean of its divisors is an integer number (114109956415).

Almost surely, 2^228219912829 is an apocalyptic number.

It is an amenable number.

228219912829 is a deficient number, since it is larger than the sum of its proper divisors (1).

228219912829 is an equidigital number, since it uses as much as digits as its factorization.

228219912829 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1492992, while the sum is 55.

The spelling of 228219912829 in words is "two hundred twenty-eight billion, two hundred nineteen million, nine hundred twelve thousand, eight hundred twenty-nine".