121022121010211 has 4 divisors (see below), whose sum is σ = 125195297596800. Its totient is φ = 116848944423624.

The previous prime is 121022121010201. The next prime is 121022121010243. The reversal of 121022121010211 is 112010121220121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121022121010211 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 121022121010211.

It is not an unprimeable number, because it can be changed into a prime (121022121010201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086588293251 + ... + 2086588293308.

It is an arithmetic number, because the mean of its divisors is an integer number (31298824399200).

Almost surely, 2^{121022121010211} is an apocalyptic number.

121022121010211 is a deficient number, since it is larger than the sum of its proper divisors (4173176586589).

121022121010211 is an equidigital number, since it uses as much as digits as its factorization.

121022121010211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4173176586588.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121022121010211 its reverse (112010121220121), we get a palindrome (233032242230332).

The spelling of 121022121010211 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred twenty-one million, ten thousand, two hundred eleven".