10003555535021 has 2 divisors, whose sum is σ = 10003555535022. Its totient is φ = 10003555535020.

The previous prime is 10003555535003. The next prime is 10003555535041. The reversal of 10003555535021 is 12053555530001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10003114072900 + 441462121 = 3162770^2 + 21011^2 .

It is a cyclic number.

It is not a de Polignac number, because 10003555535021 - 2⁶ = 10003555534957 is a prime.

It is a super-2 number, since 2×10003555535021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10003555535041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5001777767510 + 5001777767511.

It is an arithmetic number, because the mean of its divisors is an integer number (5001777767511).

Almost surely, 2^{10003555535021} is an apocalyptic number.

It is an amenable number.

10003555535021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10003555535021 is an equidigital number, since it uses as much as digits as its factorization.

10003555535021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56250, while the sum is 35.

The spelling of 10003555535021 in words is "ten trillion, three billion, five hundred fifty-five million, five hundred thirty-five thousand, twenty-one".