21003001010133 has 4 divisors (see below), whose sum is σ = 28004001346848. Its totient is φ = 14002000673420.

The previous prime is 21003001010107. The next prime is 21003001010141. The reversal of 21003001010133 is 33101010030012.

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 21003001010133 - 2¹⁷ = 21003000879061 is a prime.

It is a super-2 number, since 2×21003001010133² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21003001010153) 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, 3500500168353 + ... + 3500500168358.

It is an arithmetic number, because the mean of its divisors is an integer number (7001000336712).

Almost surely, 2^{21003001010133} is an apocalyptic number.

It is an amenable number.

21003001010133 is a deficient number, since it is larger than the sum of its proper divisors (7001000336715).

21003001010133 is an equidigital number, since it uses as much as digits as its factorization.

21003001010133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7001000336714.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21003001010133 its reverse (33101010030012), we get a palindrome (54104011040145).

The spelling of 21003001010133 in words is "twenty-one trillion, three billion, one million, ten thousand, one hundred thirty-three".