121121011022111 has 8 divisors (see below), whose sum is σ = 121140994035600. Its totient is φ = 121101028617088.

The previous prime is 121121011022107. The next prime is 121121011022129. The reversal of 121121011022111 is 111220110121121.

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 121121011022111 - 2² = 121121011022107 is a prime.

It is a super-3 number, since 3×121121011022111³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 121121011022111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121011025111) 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, 568139165 + ... + 568352313.

It is an arithmetic number, because the mean of its divisors is an integer number (15142624254450).

Almost surely, 2^{121121011022111} is an apocalyptic number.

121121011022111 is a deficient number, since it is larger than the sum of its proper divisors (19983013489).

121121011022111 is an equidigital number, since it uses as much as digits as its factorization.

121121011022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304233.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121121011022111 its reverse (111220110121121), we get a palindrome (232341121143232).

The spelling of 121121011022111 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, eleven million, twenty-two thousand, one hundred eleven".