121310213111 has 8 divisors (see below), whose sum is σ = 125872278144. Its totient is φ = 116788700160.

The previous prime is 121310213099. The next prime is 121310213131. The reversal of 121310213111 is 111312013121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121310213111 - 2¹⁴ = 121310196727 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 121310213111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121310213131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10131926 + ... + 10143891.

It is an arithmetic number, because the mean of its divisors is an integer number (15734034768).

Almost surely, 2^121310213111 is an apocalyptic number.

121310213111 is a deficient number, since it is larger than the sum of its proper divisors (4562065033).

121310213111 is a wasteful number, since it uses less digits than its factorization.

121310213111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20276041.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 121310213111 its reverse (111312013121), we get a palindrome (232622226232).

The spelling of 121310213111 in words is "one hundred twenty-one billion, three hundred ten million, two hundred thirteen thousand, one hundred eleven".