1226103387 has 4 divisors (see below), whose sum is σ = 1634804520. Its totient is φ = 817402256.

The previous prime is 1226103371. The next prime is 1226103397. The reversal of 1226103387 is 7833016221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7833016221 = 3 ⋅2611005407.

It is a cyclic number.

It is not a de Polignac number, because 1226103387 - 2⁴ = 1226103371 is a prime.

It is a super-2 number, since 2×1226103387² = 3006659031225743538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1226103397) 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, 204350562 + ... + 204350567.

It is an arithmetic number, because the mean of its divisors is an integer number (408701130).

Almost surely, 2^1226103387 is an apocalyptic number.

1226103387 is a deficient number, since it is larger than the sum of its proper divisors (408701133).

1226103387 is an equidigital number, since it uses as much as digits as its factorization.

1226103387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408701132.

The product of its (nonzero) digits is 12096, while the sum is 33.

The square root of 1226103387 is about 35015.7591235718. The cubic root of 1226103387 is about 1070.3086386564.

The spelling of 1226103387 in words is "one billion, two hundred twenty-six million, one hundred three thousand, three hundred eighty-seven".