1000214521 has 4 divisors (see below), whose sum is σ = 1004582500. Its totient is φ = 995846544.

The previous prime is 1000214513. The next prime is 1000214531. The reversal of 1000214521 is 1254120001.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1254120001 = 21401 ⋅58601.

It can be written as a sum of positive squares in 2 ways, for example, as 625250025 + 374964496 = 25005^2 + 19364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1000214521 - 2³ = 1000214513 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1000214495 and 1000214504.

It is not an unprimeable number, because it can be changed into a prime (1000214531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2183646 + ... + 2184103.

It is an arithmetic number, because the mean of its divisors is an integer number (251145625).

Almost surely, 2^1000214521 is an apocalyptic number.

It is an amenable number.

1000214521 is a deficient number, since it is larger than the sum of its proper divisors (4367979).

1000214521 is an equidigital number, since it uses as much as digits as its factorization.

1000214521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4367978.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1000214521 is about 31626.1682946259. The cubic root of 1000214521 is about 1000.0715018874.

Adding to 1000214521 its reverse (1254120001), we get a palindrome (2254334522).

The spelling of 1000214521 in words is "one billion, two hundred fourteen thousand, five hundred twenty-one".