1202000001 has 4 divisors (see below), whose sum is σ = 1602666672. Its totient is φ = 801333332.

The previous prime is 1201999973. The next prime is 1202000017. The reversal of 1202000001 is 1000002021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1000002021 = 3 ⋅333334007.

It is a cyclic number.

It is not a de Polignac number, because 1202000001 - 2¹⁰ = 1201998977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1202000081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200333331 + ... + 200333336.

It is an arithmetic number, because the mean of its divisors is an integer number (400666668).

Almost surely, 2^1202000001 is an apocalyptic number.

It is an amenable number.

1202000001 is a deficient number, since it is larger than the sum of its proper divisors (400666671).

1202000001 is an equidigital number, since it uses as much as digits as its factorization.

1202000001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400666670.

The product of its (nonzero) digits is 4, while the sum is 6.

The square root of 1202000001 is about 34669.8716611412. The cubic root of 1202000001 is about 1063.2486076715.

Adding to 1202000001 its reverse (1000002021), we get a palindrome (2202002022).

The spelling of 1202000001 in words is "one billion, two hundred two million, one", and thus it is an aban number.