212102222102 has 4 divisors (see below), whose sum is σ = 318153333156. Its totient is φ = 106051111050.

The previous prime is 212102222039. The next prime is 212102222147. The reversal of 212102222102 is 201222201212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×212102222102² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53025555524 + ... + 53025555527.

It is an arithmetic number, because the mean of its divisors is an integer number (79538333289).

Almost surely, 2^212102222102 is an apocalyptic number.

212102222102 is a deficient number, since it is larger than the sum of its proper divisors (106051111054).

212102222102 is a wasteful number, since it uses less digits than its factorization.

212102222102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106051111053.

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

Adding to 212102222102 its reverse (201222201212), we get a palindrome (413324423314).

The spelling of 212102222102 in words is "two hundred twelve billion, one hundred two million, two hundred twenty-two thousand, one hundred two".