212012211221002 has 8 divisors (see below), whose sum is σ = 318039133681476. Its totient is φ = 105999166660512.

The previous prime is 212012211220967. The next prime is 212012211221003. The reversal of 212012211221002 is 200122112210212.

It can be written as a sum of positive squares in 2 ways, for example, as 209993399340201 + 2018811880801 = 14491149^2 + 1420849^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (212012211221003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3469436803 + ... + 3469497910.

Almost surely, 2^{212012211221002} is an apocalyptic number.

212012211221002 is a deficient number, since it is larger than the sum of its proper divisors (106026922460474).

212012211221002 is a wasteful number, since it uses less digits than its factorization.

212012211221002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6938949992.

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

Adding to 212012211221002 its reverse (200122112210212), we get a palindrome (412134323431214).

The spelling of 212012211221002 in words is "two hundred twelve trillion, twelve billion, two hundred eleven million, two hundred twenty-one thousand, two".