1151403121 has 16 divisors (see below), whose sum is σ = 1281614400. Its totient is φ = 1025582400.

The previous prime is 1151403119. The next prime is 1151403167. The reversal of 1151403121 is 1213041511.

It is a cyclic number.

It is not a de Polignac number, because 1151403121 - 2¹ = 1151403119 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1151403101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177310 + ... + 183688.

It is an arithmetic number, because the mean of its divisors is an integer number (80100900).

Almost surely, 2^1151403121 is an apocalyptic number.

1151403121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1151403121 is a deficient number, since it is larger than the sum of its proper divisors (130211279).

1151403121 is a wasteful number, since it uses less digits than its factorization.

1151403121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6720.

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 1151403121 is about 33932.3314996185. The cubic root of 1151403121 is about 1048.1154771579.

Adding to 1151403121 its reverse (1213041511), we get a palindrome (2364444632).

The spelling of 1151403121 in words is "one billion, one hundred fifty-one million, four hundred three thousand, one hundred twenty-one".