1201656226 has 4 divisors (see below), whose sum is σ = 1802484342. Its totient is φ = 600828112.

The previous prime is 1201656217. The next prime is 1201656241. The reversal of 1201656226 is 6226561021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6226561021 = 37 ⋅168285433.

It can be written as a sum of positive squares in only one way, i.e., 859369225 + 342287001 = 29315^2 + 18501^2 .

It is a super-3 number, since 3×1201656226³ (a number of 28 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 300414055 + ... + 300414058.

Almost surely, 2^1201656226 is an apocalyptic number.

1201656226 is a deficient number, since it is larger than the sum of its proper divisors (600828116).

1201656226 is an equidigital number, since it uses as much as digits as its factorization.

1201656226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600828115.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 1201656226 is about 34664.9134716935. The cubic root of 1201656226 is about 1063.1472340882.

The spelling of 1201656226 in words is "one billion, two hundred one million, six hundred fifty-six thousand, two hundred twenty-six".