1121205522 has 32 divisors (see below), whose sum is σ = 2387620800. Its totient is φ = 349779968.

The previous prime is 1121205509. The next prime is 1121205529. The reversal of 1121205522 is 2255021211.

It is not an unprimeable number, because it can be changed into a prime (1121205529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12447 + ... + 48962.

It is an arithmetic number, because the mean of its divisors is an integer number (74613150).

Almost surely, 2^1121205522 is an apocalyptic number.

1121205522 is an abundant number, since it is smaller than the sum of its proper divisors (1266415278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1121205522 is a wasteful number, since it uses less digits than its factorization.

1121205522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61610.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1121205522 is about 33484.4071472081. The cubic root of 1121205522 is about 1038.8712859258.

Adding to 1121205522 its reverse (2255021211), we get a palindrome (3376226733).

The spelling of 1121205522 in words is "one billion, one hundred twenty-one million, two hundred five thousand, five hundred twenty-two".