1003400103021 has 4 divisors (see below), whose sum is σ = 1337866804032. Its totient is φ = 668933402012.

The previous prime is 1003400102993. The next prime is 1003400103089. The reversal of 1003400103021 is 1203010043001.

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 1003400103021 - 2⁵ = 1003400102989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1003400113021) 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, 167233350501 + ... + 167233350506.

It is an arithmetic number, because the mean of its divisors is an integer number (334466701008).

Almost surely, 2^{1003400103021} is an apocalyptic number.

It is an amenable number.

1003400103021 is a deficient number, since it is larger than the sum of its proper divisors (334466701011).

1003400103021 is an equidigital number, since it uses as much as digits as its factorization.

1003400103021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334466701010.

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

Adding to 1003400103021 its reverse (1203010043001), we get a palindrome (2206410146022).

The spelling of 1003400103021 in words is "one trillion, three billion, four hundred million, one hundred three thousand, twenty-one".