121022120222001 has 64 divisors (see below), whose sum is σ = 191122765712640. Its totient is φ = 75422372659200.

The previous prime is 121022120221997. The next prime is 121022120222011. The reversal of 121022120222001 is 100222021220121.

It is a happy number.

121022120222001 is a `hidden beast` number, since 1 + 21 + 0 + 221 + 202 + 220 + 0 + 1 = 666.

It is not a de Polignac number, because 121022120222001 - 2² = 121022120221997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121022120222011) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 119276841 + ... + 120287193.

It is an arithmetic number, because the mean of its divisors is an integer number (2986293214260).

Almost surely, 2^{121022120222001} is an apocalyptic number.

It is an amenable number.

121022120222001 is a deficient number, since it is larger than the sum of its proper divisors (70100645490639).

121022120222001 is a wasteful number, since it uses less digits than its factorization.

121022120222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1012143 (or 1012137 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121022120222001 its reverse (100222021220121), we get a palindrome (221244141442122).

The spelling of 121022120222001 in words is "one hundred twenty-one trillion, twenty-two billion, one hundred twenty million, two hundred twenty-two thousand, one".