201102222200021 has 16 divisors (see below), whose sum is σ = 206183651310000. Its totient is φ = 196029215416320.

The previous prime is 201102222199987. The next prime is 201102222200041. The reversal of 201102222200021 is 120002222201102.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12448865607025 + 188653356592996 = 3528295^2 + 13735114^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201102222200021 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 (201102222200041) 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 15 ways as a sum of consecutive naturals, for example, 1002418295 + ... + 1002618891.

It is an arithmetic number, because the mean of its divisors is an integer number (12886478206875).

Almost surely, 2^{201102222200021} is an apocalyptic number.

It is an amenable number.

201102222200021 is a deficient number, since it is larger than the sum of its proper divisors (5081429109979).

201102222200021 is a wasteful number, since it uses less digits than its factorization.

201102222200021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221464.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201102222200021 its reverse (120002222201102), we get a palindrome (321104444401123).

The spelling of 201102222200021 in words is "two hundred one trillion, one hundred two billion, two hundred twenty-two million, two hundred thousand, twenty-one".