211212022010117 has 2 divisors, whose sum is σ = 211212022010118. Its totient is φ = 211212022010116.

The previous prime is 211212022009993. The next prime is 211212022010141. The reversal of 211212022010117 is 711010220212112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 176821937148481 + 34390084861636 = 13297441^2 + 5864306^2 .

It is a cyclic number.

It is not a de Polignac number, because 211212022010117 - 2²⁰ = 211212020961541 is a prime.

It is a super-2 number, since 2×211212022010117² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211212022010092 and 211212022010101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211212022010317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105606011005058 + 105606011005059.

It is an arithmetic number, because the mean of its divisors is an integer number (105606011005059).

Almost surely, 2^{211212022010117} is an apocalyptic number.

It is an amenable number.

211212022010117 is a deficient number, since it is larger than the sum of its proper divisors (1).

211212022010117 is an equidigital number, since it uses as much as digits as its factorization.

211212022010117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

Adding to 211212022010117 its reverse (711010220212112), we get a palindrome (922222242222229).

The spelling of 211212022010117 in words is "two hundred eleven trillion, two hundred twelve billion, twenty-two million, ten thousand, one hundred seventeen".