212122102 has 16 divisors (see below), whose sum is σ = 320468400. Its totient is φ = 105302560.

The previous prime is 212122091. The next prime is 212122109. The reversal of 212122102 is 201221212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122109) 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, 224952 + ... + 225892.

It is an arithmetic number, because the mean of its divisors is an integer number (20029275).

Almost surely, 2^212122102 is an apocalyptic number.

212122102 is a deficient number, since it is larger than the sum of its proper divisors (108346298).

212122102 is a wasteful number, since it uses less digits than its factorization.

212122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

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

The square root of 212122102 is about 14564.4121748871. The cubic root of 212122102 is about 596.3876488822.

Adding to 212122102 its reverse (201221212), we get a palindrome (413343314).

The spelling of 212122102 in words is "two hundred twelve million, one hundred twenty-two thousand, one hundred two".