1122151720 has 32 divisors (see below), whose sum is σ = 2527780320. Its totient is φ = 448338240.

The previous prime is 1122151717. The next prime is 1122151721. The reversal of 1122151720 is 271512211.

It is a junction number, because it is equal to n+sod(n) for n = 1122151691 and 1122151700.

It is not an unprimeable number, because it can be changed into a prime (1122151721) 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 7 ways as a sum of consecutive naturals, for example, 19435 + ... + 51205.

It is an arithmetic number, because the mean of its divisors is an integer number (78993135).

Almost surely, 2^1122151720 is an apocalyptic number.

1122151720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1122151720 is an abundant number, since it is smaller than the sum of its proper divisors (1405628600).

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

1122151720 is a wasteful number, since it uses less digits than its factorization.

1122151720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32665 (or 32661 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 1122151720 is about 33498.5331022121. The cubic root of 1122151720 is about 1039.1634421594.

Adding to 1122151720 its reverse (271512211), we get a palindrome (1393663931).

The spelling of 1122151720 in words is "one billion, one hundred twenty-two million, one hundred fifty-one thousand, seven hundred twenty".