1202200001 has 4 divisors (see below), whose sum is σ = 1203764100. Its totient is φ = 1200635904.

The previous prime is 1202199923. The next prime is 1202200003. The reversal of 1202200001 is 1000022021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1000022021 = 41 ⋅24390781.

It can be written as a sum of positive squares in 2 ways, for example, as 753777025 + 448422976 = 27455^2 + 21176^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202200001 - 2³⁰ = 128458177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1202200003) 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, 780896 + ... + 782433.

It is an arithmetic number, because the mean of its divisors is an integer number (300941025).

Almost surely, 2^1202200001 is an apocalyptic number.

It is an amenable number.

1202200001 is a deficient number, since it is larger than the sum of its proper divisors (1564099).

1202200001 is an equidigital number, since it uses as much as digits as its factorization.

1202200001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1564098.

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

The square root of 1202200001 is about 34672.7558898914. The cubic root of 1202200001 is about 1063.3075754830.

Adding to 1202200001 its reverse (1000022021), we get a palindrome (2202222022).

The spelling of 1202200001 in words is "one billion, two hundred two million, two hundred thousand, one".