122021212 has 24 divisors (see below), whose sum is σ = 225610560. Its totient is φ = 57650880.

The previous prime is 122021201. The next prime is 122021213. The reversal of 122021212 is 212120221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 122021192 and 122021201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5739 + ... + 16642.

It is an arithmetic number, because the mean of its divisors is an integer number (9400440).

Almost surely, 2^122021212 is an apocalyptic number.

It is an amenable number.

122021212 is a deficient number, since it is larger than the sum of its proper divisors (103589348).

122021212 is a wasteful number, since it uses less digits than its factorization.

122021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22461 (or 22459 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122021212 is about 11046.3211975752. The cubic root of 122021212 is about 495.9963091557.

Adding to 122021212 its reverse (212120221), we get a palindrome (334141433).

Subtracting 122021212 from its reverse (212120221), we obtain a palindrome (90099009).

The spelling of 122021212 in words is "one hundred twenty-two million, twenty-one thousand, two hundred twelve".