1154712121 has 16 divisors (see below), whose sum is σ = 1200987648. Its totient is φ = 1109483200.

The previous prime is 1154712109. The next prime is 1154712133. The reversal of 1154712121 is 1212174511.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1154712109) and next prime (1154712133).

It is a cyclic number.

It is not a de Polignac number, because 1154712121 - 2⁵ = 1154712089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154712161) 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 15 ways as a sum of consecutive naturals, for example, 977151 + ... + 978331.

It is an arithmetic number, because the mean of its divisors is an integer number (75061728).

Almost surely, 2^1154712121 is an apocalyptic number.

It is an amenable number.

1154712121 is a deficient number, since it is larger than the sum of its proper divisors (46275527).

1154712121 is a wasteful number, since it uses less digits than its factorization.

1154712121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592.

The product of its digits is 560, while the sum is 25.

The square root of 1154712121 is about 33981.0553249895. The cubic root of 1154712121 is about 1049.1185712464.

Adding to 1154712121 its reverse (1212174511), we get a palindrome (2366886632).

The spelling of 1154712121 in words is "one billion, one hundred fifty-four million, seven hundred twelve thousand, one hundred twenty-one".