1010021321 has 4 divisors (see below), whose sum is σ = 1010259072. Its totient is φ = 1009783572.

The previous prime is 1010021317. The next prime is 1010021329. The reversal of 1010021321 is 1231200101.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1010021321 - 2² = 1010021317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010021329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112385 + ... + 121038.

It is an arithmetic number, because the mean of its divisors is an integer number (252564768).

Almost surely, 2^1010021321 is an apocalyptic number.

It is an amenable number.

1010021321 is a deficient number, since it is larger than the sum of its proper divisors (237751).

1010021321 is an equidigital number, since it uses as much as digits as its factorization.

1010021321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237750.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1010021321 is about 31780.8326039454. The cubic root of 1010021321 is about 1003.3293435038.

Adding to 1010021321 its reverse (1231200101), we get a palindrome (2241221422).

The spelling of 1010021321 in words is "one billion, ten million, twenty-one thousand, three hundred twenty-one".