1061221 has 4 divisors (see below), whose sum is σ = 1212832. Its totient is φ = 909612.

The previous prime is 1061189. The next prime is 1061227. The reversal of 1061221 is 1221601.

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 1061221 - 2⁵ = 1061189 is a prime.

It is a super-2 number, since 2×1061221² = 2252380021682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1061227) 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, 75795 + ... + 75808.

It is an arithmetic number, because the mean of its divisors is an integer number (303208).

2^1061221 is an apocalyptic number.

It is an amenable number.

1061221 is a deficient number, since it is larger than the sum of its proper divisors (151611).

1061221 is an equidigital number, since it uses as much as digits as its factorization.

1061221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151610.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 1061221 is about 1030.1558134574. The cubic root of 1061221 is about 102.0004165048. Note that the first 3 decimals are identical.

Subtracting from 1061221 its sum of digits (13), we obtain a cube (1061208 = 102³).

Adding to 1061221 its reverse (1221601), we get a palindrome (2282822).

The spelling of 1061221 in words is "one million, sixty-one thousand, two hundred twenty-one".