121111314245211 has 4 divisors (see below), whose sum is σ = 161481752326952. Its totient is φ = 80740876163472.

The previous prime is 121111314245111. The next prime is 121111314245239. The reversal of 121111314245211 is 112542413111121.

It is a happy number.

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

It is not a de Polignac number, because 121111314245211 - 2⁷ = 121111314245083 is a prime.

It is a super-3 number, since 3×121111314245211³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121111314245111) 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, 20185219040866 + ... + 20185219040871.

It is an arithmetic number, because the mean of its divisors is an integer number (40370438081738).

Almost surely, 2^{121111314245211} is an apocalyptic number.

121111314245211 is a deficient number, since it is larger than the sum of its proper divisors (40370438081741).

121111314245211 is an equidigital number, since it uses as much as digits as its factorization.

121111314245211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40370438081740.

The product of its digits is 1920, while the sum is 30.

Adding to 121111314245211 its reverse (112542413111121), we get a palindrome (233653727356332).

The spelling of 121111314245211 in words is "one hundred twenty-one trillion, one hundred eleven billion, three hundred fourteen million, two hundred forty-five thousand, two hundred eleven".