1485011221 has 4 divisors (see below), whose sum is σ = 1505926944. Its totient is φ = 1464095500.

The previous prime is 1485011167. The next prime is 1485011233. The reversal of 1485011221 is 1221105841.

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 1485011221 - 2²³ = 1476622613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485014221) 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, 10457755 + ... + 10457896.

It is an arithmetic number, because the mean of its divisors is an integer number (376481736).

Almost surely, 2^1485011221 is an apocalyptic number.

It is an amenable number.

1485011221 is a deficient number, since it is larger than the sum of its proper divisors (20915723).

1485011221 is an equidigital number, since it uses as much as digits as its factorization.

1485011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20915722.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 1485011221 is about 38535.8433279979. The cubic root of 1485011221 is about 1140.8886118191. Note that the first 3 decimals are identical.

The spelling of 1485011221 in words is "one billion, four hundred eighty-five million, eleven thousand, two hundred twenty-one".