1000201321123 has 4 divisors (see below), whose sum is σ = 1000207972368. Its totient is φ = 1000194669880.

The previous prime is 1000201321073. The next prime is 1000201321129. The reversal of 1000201321123 is 3211231020001.

1000201321123 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000201321123 is a prime.

It is a super-2 number, since 2×1000201321123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000201321097 and 1000201321106.

It is not an unprimeable number, because it can be changed into a prime (1000201321129) 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, 3094711 + ... + 3402592.

It is an arithmetic number, because the mean of its divisors is an integer number (250051993092).

Almost surely, 2^{1000201321123} is an apocalyptic number.

1000201321123 is a deficient number, since it is larger than the sum of its proper divisors (6651245).

1000201321123 is an equidigital number, since it uses as much as digits as its factorization.

1000201321123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6651244.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1000201321123 its reverse (3211231020001), we get a palindrome (4211432341124).

The spelling of 1000201321123 in words is "one trillion, two hundred one million, three hundred twenty-one thousand, one hundred twenty-three".