1226095901 has 4 divisors (see below), whose sum is σ = 1268375100. Its totient is φ = 1183816704.

The previous prime is 1226095867. The next prime is 1226095919. The reversal of 1226095901 is 1095906221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1095906221 = 3779 ⋅289999.

It can be written as a sum of positive squares in 2 ways, for example, as 211673401 + 1014422500 = 14549^2 + 31850^2 .

It is a cyclic number.

It is not a de Polignac number, because 1226095901 - 2³⁰ = 152354077 is a prime.

It is a super-2 number, since 2×1226095901² = 3006622316898003602, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1226095961) 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, 21139556 + ... + 21139613.

It is an arithmetic number, because the mean of its divisors is an integer number (317093775).

Almost surely, 2^1226095901 is an apocalyptic number.

It is an amenable number.

1226095901 is a deficient number, since it is larger than the sum of its proper divisors (42279199).

1226095901 is an equidigital number, since it uses as much as digits as its factorization.

1226095901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42279198.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 1226095901 is about 35015.6522286820. The cubic root of 1226095901 is about 1070.3064603880.

The spelling of 1226095901 in words is "one billion, two hundred twenty-six million, ninety-five thousand, nine hundred one".