1221433214 has 16 divisors (see below), whose sum is σ = 1877810256. Its totient is φ = 595512000.

The previous prime is 1221433207. The next prime is 1221433219. The reversal of 1221433214 is 4123341221.

It is a self number, because there is not a number n which added to its sum of digits gives 1221433214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221433219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299489 + ... + 303539.

It is an arithmetic number, because the mean of its divisors is an integer number (117363141).

Almost surely, 2^1221433214 is an apocalyptic number.

1221433214 is a deficient number, since it is larger than the sum of its proper divisors (656377042).

1221433214 is a wasteful number, since it uses less digits than its factorization.

1221433214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7771.

The product of its digits is 1152, while the sum is 23.

The square root of 1221433214 is about 34949.0087699208. The cubic root of 1221433214 is about 1068.9479903862.

Adding to 1221433214 its reverse (4123341221), we get a palindrome (5344774435).

The spelling of 1221433214 in words is "one billion, two hundred twenty-one million, four hundred thirty-three thousand, two hundred fourteen".