1145412121 has 32 divisors (see below), whose sum is σ = 1419038208. Its totient is φ = 903260160.

The previous prime is 1145412053. The next prime is 1145412127. The reversal of 1145412121 is 1212145411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1145412121 - 2¹³ = 1145403929 is a prime.

It is a super-3 number, since 3×1145412121³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1145412092 and 1145412101.

It is not an unprimeable number, because it can be changed into a prime (1145412127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 480685 + ... + 483061.

It is an arithmetic number, because the mean of its divisors is an integer number (44344944).

Almost surely, 2^1145412121 is an apocalyptic number.

It is an amenable number.

1145412121 is a deficient number, since it is larger than the sum of its proper divisors (273626087).

1145412121 is a wasteful number, since it uses less digits than its factorization.

1145412121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2521.

The product of its digits is 320, while the sum is 22.

The square root of 1145412121 is about 33843.9377289346. The cubic root of 1145412121 is about 1046.2944577763.

Adding to 1145412121 its reverse (1212145411), we get a palindrome (2357557532).

The spelling of 1145412121 in words is "one billion, one hundred forty-five million, four hundred twelve thousand, one hundred twenty-one".