1146241221 has 4 divisors (see below), whose sum is σ = 1528321632. Its totient is φ = 764160812.

The previous prime is 1146241199. The next prime is 1146241231. The reversal of 1146241221 is 1221426411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1221426411 = 3 ⋅407142137.

It is a cyclic number.

It is not a de Polignac number, because 1146241221 - 2⁵ = 1146241189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1146241191 and 1146241200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146241231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191040201 + ... + 191040206.

It is an arithmetic number, because the mean of its divisors is an integer number (382080408).

Almost surely, 2^1146241221 is an apocalyptic number.

It is an amenable number.

1146241221 is a deficient number, since it is larger than the sum of its proper divisors (382080411).

1146241221 is an equidigital number, since it uses as much as digits as its factorization.

1146241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382080410.

The product of its digits is 768, while the sum is 24.

The square root of 1146241221 is about 33856.1843833590. The cubic root of 1146241221 is about 1046.5468483047.

Adding to 1146241221 its reverse (1221426411), we get a palindrome (2367667632).

The spelling of 1146241221 in words is "one billion, one hundred forty-six million, two hundred forty-one thousand, two hundred twenty-one".