211210210220022 has 48 divisors (see below), whose sum is σ = 504284843029968. Its totient is φ = 63476413801920.

The previous prime is 211210210220011. The next prime is 211210210220027. The reversal of 211210210220022 is 220022012012112.

It is a happy number.

211210210220022 is a `hidden beast` number, since 2 + 1 + 1 + 210 + 210 + 220 + 0 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 211210210219977 and 211210210220004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210210220027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10495428729 + ... + 10495448852.

It is an arithmetic number, because the mean of its divisors is an integer number (10505934229791).

Almost surely, 2^{211210210220022} is an apocalyptic number.

211210210220022 is an abundant number, since it is smaller than the sum of its proper divisors (293074632809946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211210210220022 is a wasteful number, since it uses less digits than its factorization.

211210210220022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20990877645 (or 20990877642 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 211210210220022 its reverse (220022012012112), we get a palindrome (431232222232134).

The spelling of 211210210220022 in words is "two hundred eleven trillion, two hundred ten billion, two hundred ten million, two hundred twenty thousand, twenty-two".