211649112029 has 2 divisors, whose sum is σ = 211649112030. Its totient is φ = 211649112028.

The previous prime is 211649112019. The next prime is 211649112097. The reversal of 211649112029 is 920211946112.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 136135171225 + 75513940804 = 368965^2 + 274798^2 .

It is a cyclic number.

It is not a de Polignac number, because 211649112029 - 2⁴ = 211649112013 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 211649111983 and 211649112001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211649112019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105824556014 + 105824556015.

It is an arithmetic number, because the mean of its divisors is an integer number (105824556015).

Almost surely, 2^211649112029 is an apocalyptic number.

It is an amenable number.

211649112029 is a deficient number, since it is larger than the sum of its proper divisors (1).

211649112029 is an equidigital number, since it uses as much as digits as its factorization.

211649112029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 211649112029 in words is "two hundred eleven billion, six hundred forty-nine million, one hundred twelve thousand, twenty-nine".