211121220202222 has 128 divisors (see below), whose sum is σ = 370572023347200. Its totient is φ = 89201958912000.

The previous prime is 211121220202183. The next prime is 211121220202223. The reversal of 211121220202222 is 222202022121112.

It is a super-2 number, since 2×211121220202222² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 211121220202193 and 211121220202202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211121220202223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2879137723 + ... + 2879211049.

It is an arithmetic number, because the mean of its divisors is an integer number (2895093932400).

Almost surely, 2^{211121220202222} is an apocalyptic number.

211121220202222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211121220202222 is a deficient number, since it is larger than the sum of its proper divisors (159450803144978).

211121220202222 is a wasteful number, since it uses less digits than its factorization.

211121220202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74042.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211121220202222 its reverse (222202022121112), we get a palindrome (433323242323334).

The spelling of 211121220202222 in words is "two hundred eleven trillion, one hundred twenty-one billion, two hundred twenty million, two hundred two thousand, two hundred twenty-two".