121000110011211 has 4 divisors (see below), whose sum is σ = 161333480014952. Its totient is φ = 80666740007472.

The previous prime is 121000110011117. The next prime is 121000110011303. The reversal of 121000110011211 is 112110011000121.

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

It is not a de Polignac number, because 121000110011211 - 2¹⁵ = 121000109978443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121000110011611) 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, 20166685001866 + ... + 20166685001871.

It is an arithmetic number, because the mean of its divisors is an integer number (40333370003738).

Almost surely, 2^{121000110011211} is an apocalyptic number.

121000110011211 is a deficient number, since it is larger than the sum of its proper divisors (40333370003741).

121000110011211 is an equidigital number, since it uses as much as digits as its factorization.

121000110011211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40333370003740.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121000110011211 its reverse (112110011000121), we get a palindrome (233110121011332).

The spelling of 121000110011211 in words is "one hundred twenty-one trillion, one hundred ten million, eleven thousand, two hundred eleven".