3550010021 has 4 divisors (see below), whose sum is σ = 3550129344. Its totient is φ = 3549890700.

The previous prime is 3550009993. The next prime is 3550010059. The reversal of 3550010021 is 1200100553.

3550010021 is digitally balanced in base 3, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1200100553 = 19 ⋅63163187.

It is a cyclic number.

It is not a de Polignac number, because 3550010021 - 2²² = 3545815717 is a prime.

It is a super-2 number, since 2×3550010021² = 25205142298400840882, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3555010021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25226 + ... + 87956.

It is an arithmetic number, because the mean of its divisors is an integer number (887532336).

Almost surely, 2^3550010021 is an apocalyptic number.

It is an amenable number.

3550010021 is a deficient number, since it is larger than the sum of its proper divisors (119323).

3550010021 is an equidigital number, since it uses as much as digits as its factorization.

3550010021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119322.

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 3550010021 is about 59581.9605333695. The cubic root of 3550010021 is about 1525.4917372922.

Adding to 3550010021 its reverse (1200100553), we get a palindrome (4750110574).

The spelling of 3550010021 in words is "three billion, five hundred fifty million, ten thousand, twenty-one".