201002220101 has 4 divisors (see below), whose sum is σ = 201218585100. Its totient is φ = 200785855104.

The previous prime is 201002220007. The next prime is 201002220113. The reversal of 201002220101 is 101022200102.

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 103427203201 + 97575016900 = 321601^2 + 312370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201002220101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002220151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108181106 + ... + 108182963.

It is an arithmetic number, because the mean of its divisors is an integer number (50304646275).

Almost surely, 2^201002220101 is an apocalyptic number.

It is an amenable number.

201002220101 is a deficient number, since it is larger than the sum of its proper divisors (216364999).

201002220101 is an equidigital number, since it uses as much as digits as its factorization.

201002220101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216364998.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201002220101 its reverse (101022200102), we get a palindrome (302024420203).

The spelling of 201002220101 in words is "two hundred one billion, two million, two hundred twenty thousand, one hundred one".