1226151145 has 8 divisors (see below), whose sum is σ = 1474735680. Its totient is φ = 978684720.

The previous prime is 1226151139. The next prime is 1226151209. The reversal of 1226151145 is 5411516221.

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

It is not a de Polignac number, because 1226151145 - 2¹⁷ = 1226020073 is a prime.

It is a super-2 number, since 2×1226151145² = 3006893260769622050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277111 + ... + 281500.

It is an arithmetic number, because the mean of its divisors is an integer number (184341960).

Almost surely, 2^1226151145 is an apocalyptic number.

It is an amenable number.

1226151145 is a deficient number, since it is larger than the sum of its proper divisors (248584535).

1226151145 is an equidigital number, since it uses as much as digits as its factorization.

1226151145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 559055.

The product of its digits is 2400, while the sum is 28.

The square root of 1226151145 is about 35016.4410670188. The cubic root of 1226151145 is about 1070.3225350202.

Adding to 1226151145 its reverse (5411516221), we get a palindrome (6637667366).

The spelling of 1226151145 in words is "one billion, two hundred twenty-six million, one hundred fifty-one thousand, one hundred forty-five".