1027205221 has 4 divisors (see below), whose sum is σ = 1173948832. Its totient is φ = 880461612.

The previous prime is 1027205219. The next prime is 1027205233. The reversal of 1027205221 is 1225027201.

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 1027205221 - 2¹ = 1027205219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1027205192 and 1027205201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1027505221) 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, 73371795 + ... + 73371808.

It is an arithmetic number, because the mean of its divisors is an integer number (293487208).

Almost surely, 2^1027205221 is an apocalyptic number.

It is an amenable number.

1027205221 is a deficient number, since it is larger than the sum of its proper divisors (146743611).

1027205221 is an equidigital number, since it uses as much as digits as its factorization.

1027205221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146743610.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 1027205221 is about 32050.0424492699. The cubic root of 1027205221 is about 1008.9873918083.

The spelling of 1027205221 in words is "one billion, twenty-seven million, two hundred five thousand, two hundred twenty-one".