1151203122 has 48 divisors (see below), whose sum is σ = 2635451520. Its totient is φ = 362167200.

The previous prime is 1151203117. The next prime is 1151203133. The reversal of 1151203122 is 2213021511.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1151203095 and 1151203104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 86472 + ... + 98892.

It is an arithmetic number, because the mean of its divisors is an integer number (54905240).

Almost surely, 2^1151203122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1151203122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317725760).

1151203122 is an abundant number, since it is smaller than the sum of its proper divisors (1484248398).

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

1151203122 is a wasteful number, since it uses less digits than its factorization.

1151203122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12719 (or 12716 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1151203122 is about 33929.3843445471. The cubic root of 1151203122 is about 1048.0547876734.

Adding to 1151203122 its reverse (2213021511), we get a palindrome (3364224633).

The spelling of 1151203122 in words is "one billion, one hundred fifty-one million, two hundred three thousand, one hundred twenty-two".