122221020212 has 12 divisors (see below), whose sum is σ = 213976331940. Its totient is φ = 61084925376.

The previous prime is 122221020199. The next prime is 122221020239. The reversal of 122221020212 is 212020122221.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 43465578256 + 78755441956 = 208484^2 + 280634^2 .

It is a super-2 number, since 2×122221020212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6385433 + ... + 6404544.

It is an arithmetic number, because the mean of its divisors is an integer number (17831360995).

Almost surely, 2^122221020212 is an apocalyptic number.

It is an amenable number.

122221020212 is a deficient number, since it is larger than the sum of its proper divisors (91755311728).

122221020212 is a wasteful number, since it uses less digits than its factorization.

122221020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12792370 (or 12792368 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 122221020212 its reverse (212020122221), we get a palindrome (334241142433).

The spelling of 122221020212 in words is "one hundred twenty-two billion, two hundred twenty-one million, twenty thousand, two hundred twelve".