1121220442 has 8 divisors (see below), whose sum is σ = 1720943136. Its totient is φ = 547572732.

The previous prime is 1121220413. The next prime is 1121220449. The reversal of 1121220442 is 2440221211.

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

It is a super-4 number, since 4×1121220442⁴ (a number of 37 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121220449) 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, 6518638 + ... + 6518809.

It is an arithmetic number, because the mean of its divisors is an integer number (215117892).

Almost surely, 2^1121220442 is an apocalyptic number.

1121220442 is a deficient number, since it is larger than the sum of its proper divisors (599722694).

1121220442 is a wasteful number, since it uses less digits than its factorization.

1121220442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13037492.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1121220442 is about 33484.6299367337. The cubic root of 1121220442 is about 1038.8758940286.

Adding to 1121220442 its reverse (2440221211), we get a palindrome (3561441653).

The spelling of 1121220442 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, four hundred forty-two".