210220223117 has 2 divisors, whose sum is σ = 210220223118. Its totient is φ = 210220223116.

The previous prime is 210220223099. The next prime is 210220223137. The reversal of 210220223117 is 711322022012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 209062930756 + 1157292361 = 457234^2 + 34019^2 .

It is a cyclic number.

It is not a de Polignac number, because 210220223117 - 2²⁰ = 210219174541 is a prime.

It is a super-2 number, since 2×210220223117² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210220223092 and 210220223101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (210220223137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105110111558 + 105110111559.

It is an arithmetic number, because the mean of its divisors is an integer number (105110111559).

Almost surely, 2^210220223117 is an apocalyptic number.

It is an amenable number.

210220223117 is a deficient number, since it is larger than the sum of its proper divisors (1).

210220223117 is an equidigital number, since it uses as much as digits as its factorization.

210220223117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 210220223117 its reverse (711322022012), we get a palindrome (921542245129).

The spelling of 210220223117 in words is "two hundred ten billion, two hundred twenty million, two hundred twenty-three thousand, one hundred seventeen".