212122111201202 has 4 divisors (see below), whose sum is σ = 318183166801806. Its totient is φ = 106061055600600.

The previous prime is 212122111201183. The next prime is 212122111201213. The reversal of 212122111201202 is 202102111221212.

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., 139338877947721 + 72783233253481 = 11804189^2 + 8531309^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53030527800299 + ... + 53030527800302.

Almost surely, 2^{212122111201202} is an apocalyptic number.

212122111201202 is a deficient number, since it is larger than the sum of its proper divisors (106061055600604).

212122111201202 is a wasteful number, since it uses less digits than its factorization.

212122111201202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106061055600603.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 212122111201202 its reverse (202102111221212), we get a palindrome (414224222422414).

The spelling of 212122111201202 in words is "two hundred twelve trillion, one hundred twenty-two billion, one hundred eleven million, two hundred one thousand, two hundred two".