212120200210121 has 8 divisors (see below), whose sum is σ = 242426137817664. Its totient is φ = 181815025568400.

The previous prime is 212120200210117. The next prime is 212120200210169. The reversal of 212120200210121 is 121012002021212.

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

It is not a de Polignac number, because 212120200210121 - 2² = 212120200210117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212120200210121.

It is not an unprimeable number, because it can be changed into a prime (212120200200121) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 190145570 + ... + 191257883.

It is an arithmetic number, because the mean of its divisors is an integer number (30303267227208).

Almost surely, 2^{212120200210121} is an apocalyptic number.

It is an amenable number.

212120200210121 is a deficient number, since it is larger than the sum of its proper divisors (30305937607543).

212120200210121 is an equidigital number, since it uses as much as digits as its factorization.

212120200210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381482911.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 212120200210121 its reverse (121012002021212), we get a palindrome (333132202231333).

The spelling of 212120200210121 in words is "two hundred twelve trillion, one hundred twenty billion, two hundred million, two hundred ten thousand, one hundred twenty-one".