121021201012122 has 12 divisors (see below), whose sum is σ = 262212602192970. Its totient is φ = 40340400337368.

The previous prime is 121021201012079. The next prime is 121021201012141. The reversal of 121021201012122 is 221210102120121.

It can be written as a sum of positive squares in only one way, i.e., 110036092856481 + 10985108155641 = 10489809^2 + 3314379^2 .

It is a super-2 number, since 2×121021201012122² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6723400056229 = 121021201012122 / (1 + 2 + 1 + 0 + 2 + 1 + 2 + 0 + 1 + 0 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 121021201012095 and 121021201012104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3361700028097 + ... + 3361700028132.

Almost surely, 2^{121021201012122} is an apocalyptic number.

121021201012122 is an abundant number, since it is smaller than the sum of its proper divisors (141191401180848).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121021201012122 is a wasteful number, since it uses less digits than its factorization.

121021201012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6723400056237 (or 6723400056234 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121021201012122 its reverse (221210102120121), we get a palindrome (342231303132243).

The spelling of 121021201012122 in words is "one hundred twenty-one trillion, twenty-one billion, two hundred one million, twelve thousand, one hundred twenty-two".