212121201200122 has 4 divisors (see below), whose sum is σ = 318181801800186. Its totient is φ = 106060600600060.

The previous prime is 212121201200093. The next prime is 212121201200137. The reversal of 212121201200122 is 221002102121212.

212121201200122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 189129358409761 + 22991842790361 = 13752431^2 + 4794981^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212121201200122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030300300029 + ... + 53030300300032.

Almost surely, 2^{212121201200122} is an apocalyptic number.

212121201200122 is a deficient number, since it is larger than the sum of its proper divisors (106060600600064).

212121201200122 is a wasteful number, since it uses less digits than its factorization.

212121201200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106060600600063.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 212121201200122 its reverse (221002102121212), we get a palindrome (433123303321334).

The spelling of 212121201200122 in words is "two hundred twelve trillion, one hundred twenty-one billion, two hundred one million, two hundred thousand, one hundred twenty-two".