1154221201 has 4 divisors (see below), whose sum is σ = 1319109952. Its totient is φ = 989332452.

The previous prime is 1154221151. The next prime is 1154221207. The reversal of 1154221201 is 1021224511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1154221201 - 2⁷ = 1154221073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1154221207) 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, 82444365 + ... + 82444378.

It is an arithmetic number, because the mean of its divisors is an integer number (329777488).

Almost surely, 2^1154221201 is an apocalyptic number.

It is an amenable number.

1154221201 is a deficient number, since it is larger than the sum of its proper divisors (164888751).

1154221201 is an equidigital number, since it uses as much as digits as its factorization.

1154221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164888750.

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 1154221201 is about 33973.8311204374. The cubic root of 1154221201 is about 1048.9698743591.

Adding to 1154221201 its reverse (1021224511), we get a palindrome (2175445712).

The spelling of 1154221201 in words is "one billion, one hundred fifty-four million, two hundred twenty-one thousand, two hundred one".