121011022001221 has 48 divisors (see below), whose sum is σ = 140452963614720. Its totient is φ = 103377151251360.

The previous prime is 121011022001209. The next prime is 121011022001279. The reversal of 121011022001221 is 122100220110121.

It is not a de Polignac number, because 121011022001221 - 2¹¹ = 121011021999173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121011022001195 and 121011022001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011022071221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2605782720 + ... + 2605829158.

It is an arithmetic number, because the mean of its divisors is an integer number (2926103408640).

Almost surely, 2^{121011022001221} is an apocalyptic number.

121011022001221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121011022001221 is a deficient number, since it is larger than the sum of its proper divisors (19441941613499).

121011022001221 is a wasteful number, since it uses less digits than its factorization.

121011022001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51782 (or 51763 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121011022001221 its reverse (122100220110121), we get a palindrome (243111242111342).

The spelling of 121011022001221 in words is "one hundred twenty-one trillion, eleven billion, twenty-two million, one thousand, two hundred twenty-one".