121121022212011 has 8 divisors (see below), whose sum is σ = 123407069791824. Its totient is φ = 118835002235040.

The previous prime is 121121022211991. The next prime is 121121022212033. The reversal of 121121022212011 is 110212220121121.

It is a happy number.

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 121121022212011 - 2¹⁵ = 121121022179243 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 121121022212011.

It is not an unprimeable number, because it can be changed into a prime (121121022252011) 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, 2067040 + ... + 15700786.

It is an arithmetic number, because the mean of its divisors is an integer number (15425883723978).

Almost surely, 2^{121121022212011} is an apocalyptic number.

121121022212011 is a deficient number, since it is larger than the sum of its proper divisors (2286047579813).

121121022212011 is a wasteful number, since it uses less digits than its factorization.

121121022212011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13801421.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121121022212011 its reverse (110212220121121), we get a palindrome (231333242333132).

The spelling of 121121022212011 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, twenty-two million, two hundred twelve thousand, eleven".