1000033221 has 16 divisors (see below), whose sum is σ = 1458169920. Its totient is φ = 604590720.

The previous prime is 1000033193. The next prime is 1000033231. The reversal of 1000033221 is 1223300001.

It is a happy number.

It is not a de Polignac number, because 1000033221 - 2¹⁰ = 1000032197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1000033197 and 1000033206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000033231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23550 + ... + 50543.

It is an arithmetic number, because the mean of its divisors is an integer number (91135620).

Almost surely, 2^1000033221 is an apocalyptic number.

1000033221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1000033221 is a deficient number, since it is larger than the sum of its proper divisors (458136699).

1000033221 is a wasteful number, since it uses less digits than its factorization.

1000033221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74516.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 1000033221 is about 31623.3018674521. The cubic root of 1000033221 is about 1000.0110735440.

Adding to 1000033221 its reverse (1223300001), we get a palindrome (2223333222).

The spelling of 1000033221 in words is "one billion, thirty-three thousand, two hundred twenty-one".