210212111211121 has 8 divisors (see below), whose sum is σ = 210557521977920. Its totient is φ = 209866719191472.

The previous prime is 210212111211041. The next prime is 210212111211133. The reversal of 210212111211121 is 121112111212012.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210212111211121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210212111212121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17846596 + ... + 27183178.

It is an arithmetic number, because the mean of its divisors is an integer number (26319690247240).

Almost surely, 2^{210212111211121} is an apocalyptic number.

It is an amenable number.

210212111211121 is a deficient number, since it is larger than the sum of its proper divisors (345410766799).

210212111211121 is an equidigital number, since it uses as much as digits as its factorization.

210212111211121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9373575.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 210212111211121 its reverse (121112111212012), we get a palindrome (331324222423133).

The spelling of 210212111211121 in words is "two hundred ten trillion, two hundred twelve billion, one hundred eleven million, two hundred eleven thousand, one hundred twenty-one".