121010110211 has 4 divisors (see below), whose sum is σ = 127379063400. Its totient is φ = 114641157024.

The previous prime is 121010110189. The next prime is 121010110219. The reversal of 121010110211 is 112011010121.

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

It is a cyclic number.

It is not a de Polignac number, because 121010110211 - 2¹⁸ = 121009848067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121010110192 and 121010110201.

It is not an unprimeable number, because it can be changed into a prime (121010110219) 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, 3184476566 + ... + 3184476603.

It is an arithmetic number, because the mean of its divisors is an integer number (31844765850).

Almost surely, 2^121010110211 is an apocalyptic number.

121010110211 is a deficient number, since it is larger than the sum of its proper divisors (6368953189).

121010110211 is an equidigital number, since it uses as much as digits as its factorization.

121010110211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6368953188.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121010110211 its reverse (112011010121), we get a palindrome (233021120332).

The spelling of 121010110211 in words is "one hundred twenty-one billion, ten million, one hundred ten thousand, two hundred eleven".