121211100002211 has 8 divisors (see below), whose sum is σ = 164264222954064. Its totient is φ = 79482688525920.

The previous prime is 121211100002189. The next prime is 121211100002249. The reversal of 121211100002211 is 112200001112121.

It is a happy number.

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

It is not a de Polignac number, because 121211100002211 - 2¹⁴ = 121211099985827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121211100002281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 331177868676 + ... + 331177869041.

It is an arithmetic number, because the mean of its divisors is an integer number (20533027869258).

Almost surely, 2^{121211100002211} is an apocalyptic number.

121211100002211 is a deficient number, since it is larger than the sum of its proper divisors (43053122951853).

121211100002211 is an equidigital number, since it uses as much as digits as its factorization.

121211100002211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662355737781.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121211100002211 its reverse (112200001112121), we get a palindrome (233411101114332).

The spelling of 121211100002211 in words is "one hundred twenty-one trillion, two hundred eleven billion, one hundred million, two thousand, two hundred eleven".