211220210111329 has 2 divisors, whose sum is σ = 211220210111330. Its totient is φ = 211220210111328.

The previous prime is 211220210111203. The next prime is 211220210111347. The reversal of 211220210111329 is 923111012022112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 208007727435729 + 3212482675600 = 14422473^2 + 1792340^2 .

It is a cyclic number.

It is not a de Polignac number, because 211220210111329 - 2⁷ = 211220210111201 is a prime.

It is a super-2 number, since 2×211220210111329² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211220210111297 and 211220210111306.

It is not a weakly prime, because it can be changed into another prime (211220210111369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105610105055664 + 105610105055665.

It is an arithmetic number, because the mean of its divisors is an integer number (105610105055665).

Almost surely, 2^{211220210111329} is an apocalyptic number.

It is an amenable number.

211220210111329 is a deficient number, since it is larger than the sum of its proper divisors (1).

211220210111329 is an equidigital number, since it uses as much as digits as its factorization.

211220210111329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 28.

The spelling of 211220210111329 in words is "two hundred eleven trillion, two hundred twenty billion, two hundred ten million, one hundred eleven thousand, three hundred twenty-nine".