121001110311 has 4 divisors (see below), whose sum is σ = 161334813752. Its totient is φ = 80667406872.

The previous prime is 121001110277. The next prime is 121001110357. The reversal of 121001110311 is 113011100121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113011100121 = 3 ⋅37670366707.

It is not a de Polignac number, because 121001110311 - 2⁶ = 121001110247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001110381) 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, 20166851716 + ... + 20166851721.

It is an arithmetic number, because the mean of its divisors is an integer number (40333703438).

Almost surely, 2^121001110311 is an apocalyptic number.

121001110311 is a deficient number, since it is larger than the sum of its proper divisors (40333703441).

121001110311 is an equidigital number, since it uses as much as digits as its factorization.

121001110311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40333703440.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 121001110311 its reverse (113011100121), we get a palindrome (234012210432).

The spelling of 121001110311 in words is "one hundred twenty-one billion, one million, one hundred ten thousand, three hundred eleven".