1020003123201 has 4 divisors (see below), whose sum is σ = 1360004164272. Its totient is φ = 680002082132.

The previous prime is 1020003123199. The next prime is 1020003123229. The reversal of 1020003123201 is 1023213000201.

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.

It is a cyclic number.

It is not a de Polignac number, because 1020003123201 - 2¹ = 1020003123199 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020003123241) 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, 170000520531 + ... + 170000520536.

It is an arithmetic number, because the mean of its divisors is an integer number (340001041068).

Almost surely, 2^{1020003123201} is an apocalyptic number.

It is an amenable number.

1020003123201 is a deficient number, since it is larger than the sum of its proper divisors (340001041071).

1020003123201 is an equidigital number, since it uses as much as digits as its factorization.

1020003123201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340001041070.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 1020003123201 its reverse (1023213000201), we get a palindrome (2043216123402).

The spelling of 1020003123201 in words is "one trillion, twenty billion, three million, one hundred twenty-three thousand, two hundred one".