201022122002101 has 4 divisors (see below), whose sum is σ = 202801078834092. Its totient is φ = 199243165170112.

The previous prime is 201022122002087. The next prime is 201022122002147. The reversal of 201022122002101 is 101200221220102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 65105113863076 + 135917008139025 = 8068774^2 + 11658345^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201022122002101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022122008101) 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 3 ways as a sum of consecutive naturals, for example, 889478415826 + ... + 889478416051.

It is an arithmetic number, because the mean of its divisors is an integer number (50700269708523).

Almost surely, 2^{201022122002101} is an apocalyptic number.

It is an amenable number.

201022122002101 is a deficient number, since it is larger than the sum of its proper divisors (1778956831991).

201022122002101 is a wasteful number, since it uses less digits than its factorization.

201022122002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1778956831990.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201022122002101 its reverse (101200221220102), we get a palindrome (302222343222203).

The spelling of 201022122002101 in words is "two hundred one trillion, twenty-two billion, one hundred twenty-two million, two thousand, one hundred one".