1010643221 has 8 divisors (see below), whose sum is σ = 1156773504. Its totient is φ = 864951120.

The previous prime is 1010643203. The next prime is 1010643223. The reversal of 1010643221 is 1223460101.

1010643221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1010643221 - 2²² = 1006448917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1010643193 and 1010643202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1010643223) 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, 104585 + ... + 113838.

It is an arithmetic number, because the mean of its divisors is an integer number (144596688).

Almost surely, 2^1010643221 is an apocalyptic number.

It is an amenable number.

1010643221 is a deficient number, since it is larger than the sum of its proper divisors (146130283).

1010643221 is an equidigital number, since it uses as much as digits as its factorization.

1010643221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219091.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1010643221 is about 31790.6152976000. The cubic root of 1010643221 is about 1003.5352277704.

The spelling of 1010643221 in words is "one billion, ten million, six hundred forty-three thousand, two hundred twenty-one".