211321203829 has 2 divisors, whose sum is σ = 211321203830. Its totient is φ = 211321203828.

The previous prime is 211321203809. The next prime is 211321203839. The reversal of 211321203829 is 928302123112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171004579729 + 40316624100 = 413527^2 + 200790^2 .

It is a cyclic number.

It is not a de Polignac number, because 211321203829 - 2³¹ = 209173720181 is a prime.

It is a super-2 number, since 2×211321203829² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211321203794 and 211321203803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211321203809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105660601914 + 105660601915.

It is an arithmetic number, because the mean of its divisors is an integer number (105660601915).

Almost surely, 2^211321203829 is an apocalyptic number.

It is an amenable number.

211321203829 is a deficient number, since it is larger than the sum of its proper divisors (1).

211321203829 is an equidigital number, since it uses as much as digits as its factorization.

211321203829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 34.

The spelling of 211321203829 in words is "two hundred eleven billion, three hundred twenty-one million, two hundred three thousand, eight hundred twenty-nine".