201122020121 has 8 divisors (see below), whose sum is σ = 219422034624. Its totient is φ = 182824704720.

The previous prime is 201122020109. The next prime is 201122020123. The reversal of 201122020121 is 121020221102.

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 201122020121 - 2²² = 201117825817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 201122020096 and 201122020105.

It is not an unprimeable number, because it can be changed into a prime (201122020123) 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 7 ways as a sum of consecutive naturals, for example, 517370 + ... + 818483.

It is an arithmetic number, because the mean of its divisors is an integer number (27427754328).

Almost surely, 2^201122020121 is an apocalyptic number.

It is an amenable number.

201122020121 is a deficient number, since it is larger than the sum of its proper divisors (18300014503).

201122020121 is a wasteful number, since it uses less digits than its factorization.

201122020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1349551.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201122020121 its reverse (121020221102), we get a palindrome (322142241223).

The spelling of 201122020121 in words is "two hundred one billion, one hundred twenty-two million, twenty thousand, one hundred twenty-one".