201020222102121 has 24 divisors (see below), whose sum is σ = 298210986026304. Its totient is φ = 130391142694560.

The previous prime is 201020222102083. The next prime is 201020222102177. The reversal of 201020222102121 is 121201222020102.

It is a happy number.

201020222102121 is a `hidden beast` number, since 20 + 10 + 202 + 221 + 0 + 212 + 1 = 666.

It is not a de Polignac number, because 201020222102121 - 2²⁷ = 201020087884393 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201020222102094 and 201020222102103.

It is not an unprimeable number, because it can be changed into a prime (201020222103121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187781430 + ... + 188848896.

It is an arithmetic number, because the mean of its divisors is an integer number (12425457751096).

Almost surely, 2^{201020222102121} is an apocalyptic number.

It is an amenable number.

201020222102121 is a deficient number, since it is larger than the sum of its proper divisors (97190763924183).

201020222102121 is a wasteful number, since it uses less digits than its factorization.

201020222102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633021 (or 1633018 counting only the distinct ones).

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

Adding to 201020222102121 its reverse (121201222020102), we get a palindrome (322221444122223).

The spelling of 201020222102121 in words is "two hundred one trillion, twenty billion, two hundred twenty-two million, one hundred two thousand, one hundred twenty-one".