1226165003 has 4 divisors (see below), whose sum is σ = 1401331440. Its totient is φ = 1050998568.

The previous prime is 1226164993. The next prime is 1226165011. The reversal of 1226165003 is 3005616221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3005616221 = 499 ⋅6023279.

It is a cyclic number.

It is not a de Polignac number, because 1226165003 - 2⁶ = 1226164939 is a prime.

It is a super-2 number, since 2×1226165003² = 3006961229163980018, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1226165023) 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, 87583208 + ... + 87583221.

It is an arithmetic number, because the mean of its divisors is an integer number (350332860).

Almost surely, 2^1226165003 is an apocalyptic number.

1226165003 is a deficient number, since it is larger than the sum of its proper divisors (175166437).

1226165003 is an equidigital number, since it uses as much as digits as its factorization.

1226165003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175166436.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1226165003 is about 35016.6389449359. The cubic root of 1226165003 is about 1070.3265672783.

The spelling of 1226165003 in words is "one billion, two hundred twenty-six million, one hundred sixty-five thousand, three".