12221030 has 32 divisors (see below), whose sum is σ = 22819104. Its totient is φ = 4709376.

The previous prime is 12221029. The next prime is 12221039. The reversal of 12221030 is 3012221.

12221030 = T₁₂₆₉ + T₁₂₇₀ + ... + T₁₂₈₃.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41564 + ... + 41856.

It is an arithmetic number, because the mean of its divisors is an integer number (713097).

Almost surely, 2^12221030 is an apocalyptic number.

12221030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12221030 is a deficient number, since it is larger than the sum of its proper divisors (10598074).

12221030 is a wasteful number, since it uses less digits than its factorization.

12221030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 12221030 is about 3495.8589788491. The cubic root of 12221030 is about 230.3399509749.

Adding to 12221030 its reverse (3012221), we get a palindrome (15233251).

The spelling of 12221030 in words is "twelve million, two hundred twenty-one thousand, thirty".