1155421122 has 32 divisors (see below), whose sum is σ = 2442700800. Its totient is φ = 363334608.

The previous prime is 1155421093. The next prime is 1155421153. The reversal of 1155421122 is 2211245511.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1155421092 and 1155421101.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6043 + ... + 48449.

It is an arithmetic number, because the mean of its divisors is an integer number (76334400).

Almost surely, 2^1155421122 is an apocalyptic number.

1155421122 is an abundant number, since it is smaller than the sum of its proper divisors (1287279678).

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

1155421122 is a wasteful number, since it uses less digits than its factorization.

1155421122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42670.

The product of its digits is 800, while the sum is 24.

The square root of 1155421122 is about 33991.4860222380. The cubic root of 1155421122 is about 1049.3332492648. Note that the first 3 decimals are identical.

Adding to 1155421122 its reverse (2211245511), we get a palindrome (3366666633).

The spelling of 1155421122 in words is "one billion, one hundred fifty-five million, four hundred twenty-one thousand, one hundred twenty-two".