121022112011 has 12 divisors (see below), whose sum is σ = 126659792448. Its totient is φ = 115625707824.

The previous prime is 121022111999. The next prime is 121022112031. The reversal of 121022112011 is 110211220121.

It is not a de Polignac number, because 121022112011 - 2³⁰ = 119948370187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121022112031) 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 11 ways as a sum of consecutive naturals, for example, 323981 + ... + 589073.

It is an arithmetic number, because the mean of its divisors is an integer number (10554982704).

Almost surely, 2^121022112011 is an apocalyptic number.

121022112011 is a deficient number, since it is larger than the sum of its proper divisors (5637680437).

121022112011 is an equidigital number, since it uses as much as digits as its factorization.

121022112011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266002 (or 265979 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121022112011 its reverse (110211220121), we get a palindrome (231233332132).

The spelling of 121022112011 in words is "one hundred twenty-one billion, twenty-two million, one hundred twelve thousand, eleven".