121112021211 has 8 divisors (see below), whose sum is σ = 161636638800. Its totient is φ = 80664375552.

The previous prime is 121112021179. The next prime is 121112021213. The reversal of 121112021211 is 112120211121.

It is a happy number.

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

It is not a de Polignac number, because 121112021211 - 2⁵ = 121112021179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121112021213) 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, 19239310 + ... + 19245603.

It is an arithmetic number, because the mean of its divisors is an integer number (20204579850).

Almost surely, 2^121112021211 is an apocalyptic number.

121112021211 is a deficient number, since it is larger than the sum of its proper divisors (40524617589).

121112021211 is a wasteful number, since it uses less digits than its factorization.

121112021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38485965.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121112021211 its reverse (112120211121), we get a palindrome (233232232332).

The spelling of 121112021211 in words is "one hundred twenty-one billion, one hundred twelve million, twenty-one thousand, two hundred eleven".