201022022121 has 16 divisors (see below), whose sum is σ = 274287921600. Its totient is φ = 130885977600.

The previous prime is 201022022087. The next prime is 201022022287. The reversal of 201022022121 is 121220220102.

It is a de Polignac number, because none of the positive numbers 2^k-201022022121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201022022121.

It is not an unprimeable number, because it can be changed into a prime (201022022821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1456305 + ... + 1588353.

It is an arithmetic number, because the mean of its divisors is an integer number (17142995100).

Almost surely, 2^201022022121 is an apocalyptic number.

It is an amenable number.

201022022121 is a deficient number, since it is larger than the sum of its proper divisors (73265899479).

201022022121 is a wasteful number, since it uses less digits than its factorization.

201022022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143896.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201022022121 its reverse (121220220102), we get a palindrome (322242242223).

The spelling of 201022022121 in words is "two hundred one billion, twenty-two million, twenty-two thousand, one hundred twenty-one".