121310023211 has 8 divisors (see below), whose sum is σ = 131396719440. Its totient is φ = 111331206432.

The previous prime is 121310023207. The next prime is 121310023229. The reversal of 121310023211 is 112320013121.

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 121310023211 - 2² = 121310023207 is a prime.

It is a super-2 number, since 2×121310023211² (a number of 23 digits) contains 22 as substring.

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 121310023211.

It is not an unprimeable number, because it can be changed into a prime (121310023271) 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, 26967521 + ... + 26972018.

It is an arithmetic number, because the mean of its divisors is an integer number (16424589930).

Almost surely, 2^121310023211 is an apocalyptic number.

121310023211 is a deficient number, since it is larger than the sum of its proper divisors (10086696229).

121310023211 is a wasteful number, since it uses less digits than its factorization.

121310023211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53939725.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121310023211 its reverse (112320013121), we get a palindrome (233630036332).

The spelling of 121310023211 in words is "one hundred twenty-one billion, three hundred ten million, twenty-three thousand, two hundred eleven".