211200022122122 has 36 divisors (see below), whose sum is σ = 369906550349910. Its totient is φ = 90352950610560.

The previous prime is 211200022122097. The next prime is 211200022122149. The reversal of 211200022122122 is 221221220002112.

It can be written as a sum of positive squares in 3 ways, for example, as 207432265495081 + 3767756627041 = 14402509^2 + 1941071^2 .

It is a super-4 number, since 4×211200022122122⁴ (a number of 58 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211200022122094 and 211200022122103.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1509838997 + ... + 1509978872.

Almost surely, 2^{211200022122122} is an apocalyptic number.

211200022122122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211200022122122 is a deficient number, since it is larger than the sum of its proper divisors (158706528227788).

211200022122122 is a wasteful number, since it uses less digits than its factorization.

211200022122122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019817927 (or 3019817899 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211200022122122 its reverse (221221220002112), we get a palindrome (432421242124234).

The spelling of 211200022122122 in words is "two hundred eleven trillion, two hundred billion, twenty-two million, one hundred twenty-two thousand, one hundred twenty-two".