1650133221 has 8 divisors (see below), whose sum is σ = 2400193824. Its totient is φ = 1000080720.

The previous prime is 1650133211. The next prime is 1650133241. The reversal of 1650133221 is 1223310561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1650133221 - 2⁶ = 1650133157 is a prime.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1650133191 and 1650133200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1650133211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25001986 + ... + 25002051.

It is an arithmetic number, because the mean of its divisors is an integer number (300024228).

Almost surely, 2^1650133221 is an apocalyptic number.

1650133221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1650133221 is a deficient number, since it is larger than the sum of its proper divisors (750060603).

1650133221 is a wasteful number, since it uses less digits than its factorization.

1650133221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50004051.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1650133221 is about 40621.8318272330. The cubic root of 1650133221 is about 1181.6975521759.

Adding to 1650133221 its reverse (1223310561), we get a palindrome (2873443782).

The spelling of 1650133221 in words is "one billion, six hundred fifty million, one hundred thirty-three thousand, two hundred twenty-one".