1151121013 has 8 divisors (see below), whose sum is σ = 1333588928. Its totient is φ = 973158624.

The previous prime is 1151120977. The next prime is 1151121029. The reversal of 1151121013 is 3101211511.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1151121013 - 2²¹ = 1149023861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1151121073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1125831 + ... + 1126852.

It is an arithmetic number, because the mean of its divisors is an integer number (166698616).

Almost surely, 2^1151121013 is an apocalyptic number.

It is an amenable number.

1151121013 is a deficient number, since it is larger than the sum of its proper divisors (182467915).

1151121013 is an equidigital number, since it uses as much as digits as its factorization.

1151121013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252763.

The product of its (nonzero) digits is 30, while the sum is 16.

The square root of 1151121013 is about 33928.1743245934. The cubic root of 1151121013 is about 1048.0298697491.

Adding to 1151121013 its reverse (3101211511), we get a palindrome (4252332524).

The spelling of 1151121013 in words is "one billion, one hundred fifty-one million, one hundred twenty-one thousand, thirteen".