1322121243 has 8 divisors (see below), whose sum is σ = 1762996288. Its totient is φ = 881330184.

The previous prime is 1322121239. The next prime is 1322121247. The reversal of 1322121243 is 3421212231.

It is an interprime number because it is at equal distance from previous prime (1322121239) and next prime (1322121247).

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

It is not a de Polignac number, because 1322121243 - 2² = 1322121239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322121247) 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, 51480 + ... + 72762.

It is an arithmetic number, because the mean of its divisors is an integer number (220374536).

Almost surely, 2^1322121243 is an apocalyptic number.

1322121243 is a deficient number, since it is larger than the sum of its proper divisors (440875045).

1322121243 is a wasteful number, since it uses less digits than its factorization.

1322121243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41993.

The product of its digits is 576, while the sum is 21.

The square root of 1322121243 is about 36360.9851764223. The cubic root of 1322121243 is about 1097.5486024453.

Adding to 1322121243 its reverse (3421212231), we get a palindrome (4743333474).

The spelling of 1322121243 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred forty-three".