211223133029 has 2 divisors, whose sum is σ = 211223133030. Its totient is φ = 211223133028.

The previous prime is 211223133013. The next prime is 211223133059. The reversal of 211223133029 is 920331322112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195874400929 + 15348732100 = 442577^2 + 123890^2 .

It is a cyclic number.

It is not a de Polignac number, because 211223133029 - 2⁴ = 211223133013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211223132992 and 211223133010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211223133059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105611566514 + 105611566515.

It is an arithmetic number, because the mean of its divisors is an integer number (105611566515).

Almost surely, 2^211223133029 is an apocalyptic number.

It is an amenable number.

211223133029 is a deficient number, since it is larger than the sum of its proper divisors (1).

211223133029 is an equidigital number, since it uses as much as digits as its factorization.

211223133029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 29.

The spelling of 211223133029 in words is "two hundred eleven billion, two hundred twenty-three million, one hundred thirty-three thousand, twenty-nine".