1002520201 has 4 divisors (see below), whose sum is σ = 1003064832. Its totient is φ = 1001975572.

The previous prime is 1002520193. The next prime is 1002520279. The reversal of 1002520201 is 1020252001.

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: 1020252001 = 1493 ⋅683357.

It is a cyclic number.

It is not a de Polignac number, because 1002520201 - 2³ = 1002520193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002520301) 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, 269545 + ... + 273238.

It is an arithmetic number, because the mean of its divisors is an integer number (250766208).

Almost surely, 2^1002520201 is an apocalyptic number.

It is an amenable number.

1002520201 is a deficient number, since it is larger than the sum of its proper divisors (544631).

1002520201 is an equidigital number, since it uses as much as digits as its factorization.

1002520201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 544630.

The product of its (nonzero) digits is 40, while the sum is 13.

The square root of 1002520201 is about 31662.5994037129. The cubic root of 1002520201 is about 1000.8393622739.

Adding to 1002520201 its reverse (1020252001), we get a palindrome (2022772202).

The spelling of 1002520201 in words is "one billion, two million, five hundred twenty thousand, two hundred one".