212002122 has 32 divisors (see below), whose sum is σ = 439732800. Its totient is φ = 68058368.

The previous prime is 212002111. The next prime is 212002123. The reversal of 212002122 is 221200212.

It is a junction number, because it is equal to n+sod(n) for n = 212002098 and 212002107.

It is not an unprimeable number, because it can be changed into a prime (212002123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79954 + ... + 82562.

It is an arithmetic number, because the mean of its divisors is an integer number (13741650).

Almost surely, 2^212002122 is an apocalyptic number.

212002122 is an abundant number, since it is smaller than the sum of its proper divisors (227730678).

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

212002122 is a wasteful number, since it uses less digits than its factorization.

212002122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3110.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 212002122 is about 14560.2926481579. The cubic root of 212002122 is about 596.2751852201.

Adding to 212002122 its reverse (221200212), we get a palindrome (433202334).

It can be divided in two parts, 21200212 and 2, that multiplied together give a palindrome (42400424).

The spelling of 212002122 in words is "two hundred twelve million, two thousand, one hundred twenty-two".