2201002101 has 6 divisors (see below), whose sum is σ = 3179225270. Its totient is φ = 1467334728.

The previous prime is 2201002099. The next prime is 2201002117. The reversal of 2201002101 is 1012001022.

It can be written as a sum of positive squares in only one way, i.e., 1552281201 + 648720900 = 39399^2 + 25470^2 .

It is not a de Polignac number, because 2201002101 - 2¹ = 2201002099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 244555789 = 2201002101 / (2 + 2 + 0 + 1 + 0 + 0 + 2 + 1 + 0 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2201002501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 122277886 + ... + 122277903.

Almost surely, 2^2201002101 is an apocalyptic number.

It is an amenable number.

2201002101 is a deficient number, since it is larger than the sum of its proper divisors (978223169).

2201002101 is a wasteful number, since it uses less digits than its factorization.

2201002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244555795 (or 244555792 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2201002101 is about 46914.8388146011. The cubic root of 2201002101 is about 1300.7888902076.

Adding to 2201002101 its reverse (1012001022), we get a palindrome (3213003123).

The spelling of 2201002101 in words is "two billion, two hundred one million, two thousand, one hundred one".