212220101122 has 4 divisors (see below), whose sum is σ = 318330151686. Its totient is φ = 106110050560.

The previous prime is 212220101099. The next prime is 212220101123. The reversal of 212220101122 is 221101022212.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 187141894801 + 25078206321 = 432599^2 + 158361^2 .

It is a junction number, because it is equal to n+sod(n) for n = 212220101096 and 212220101105.

It is not an unprimeable number, because it can be changed into a prime (212220101123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53055025279 + ... + 53055025282.

Almost surely, 2^212220101122 is an apocalyptic number.

212220101122 is a deficient number, since it is larger than the sum of its proper divisors (106110050564).

212220101122 is a wasteful number, since it uses less digits than its factorization.

212220101122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106110050563.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212220101122 its reverse (221101022212), we get a palindrome (433321123334).

The spelling of 212220101122 in words is "two hundred twelve billion, two hundred twenty million, one hundred one thousand, one hundred twenty-two".