201012211100121 has 16 divisors (see below), whose sum is σ = 268964752914624. Its totient is φ = 133533910001664.

The previous prime is 201012211100023. The next prime is 201012211100161. The reversal of 201012211100121 is 121001112210102.

It is a happy number.

It is not a de Polignac number, because 201012211100121 - 2³¹ = 201010063616473 is a prime.

It is a super-3 number, since 3×201012211100121³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 201012211100121.

It is not an unprimeable number, because it can be changed into a prime (201012211100161) 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, 197663865 + ... + 198678201.

It is an arithmetic number, because the mean of its divisors is an integer number (16810297057164).

Almost surely, 2^{201012211100121} is an apocalyptic number.

It is an amenable number.

201012211100121 is a deficient number, since it is larger than the sum of its proper divisors (67952541814503).

201012211100121 is a wasteful number, since it uses less digits than its factorization.

201012211100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1248040.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 201012211100121 its reverse (121001112210102), we get a palindrome (322013323310223).

The spelling of 201012211100121 in words is "two hundred one trillion, twelve billion, two hundred eleven million, one hundred thousand, one hundred twenty-one".