1222121441 has 8 divisors (see below), whose sum is σ = 1231156224. Its totient is φ = 1213102800.

The previous prime is 1222121437. The next prime is 1222121443. The reversal of 1222121441 is 1441212221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1222121441 - 2² = 1222121437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222121443) 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, 177326 + ... + 184088.

It is an arithmetic number, because the mean of its divisors is an integer number (153894528).

Almost surely, 2^1222121441 is an apocalyptic number.

It is an amenable number.

1222121441 is a deficient number, since it is larger than the sum of its proper divisors (9034783).

1222121441 is a wasteful number, since it uses less digits than its factorization.

1222121441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071.

The product of its digits is 256, while the sum is 20.

The square root of 1222121441 is about 34958.8535424147. The cubic root of 1222121441 is about 1069.1487219881.

Adding to 1222121441 its reverse (1441212221), we get a palindrome (2663333662).

The spelling of 1222121441 in words is "one billion, two hundred twenty-two million, one hundred twenty-one thousand, four hundred forty-one".