1051670221 has 16 divisors (see below), whose sum is σ = 1250726400. Its totient is φ = 865530288.

The previous prime is 1051670189. The next prime is 1051670233. The reversal of 1051670221 is 1220761501.

It is not a de Polignac number, because 1051670221 - 2⁵ = 1051670189 is a prime.

It is a super-2 number, since 2×1051670221² = 2212020507476377682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1051670251) 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, 11851 + ... + 47368.

It is an arithmetic number, because the mean of its divisors is an integer number (78170400).

Almost surely, 2^1051670221 is an apocalyptic number.

It is an amenable number.

1051670221 is a deficient number, since it is larger than the sum of its proper divisors (199056179).

1051670221 is an equidigital number, since it uses as much as digits as its factorization.

1051670221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59328.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 1051670221 is about 32429.4653209084. The cubic root of 1051670221 is about 1016.9349940257.

The spelling of 1051670221 in words is "one billion, fifty-one million, six hundred seventy thousand, two hundred twenty-one".