1231226601 has 16 divisors (see below), whose sum is σ = 1795618560. Its totient is φ = 744221520.

The previous prime is 1231226561. The next prime is 1231226603. The reversal of 1231226601 is 1066221321.

It is not a de Polignac number, because 1231226601 - 2⁶ = 1231226537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1231226603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36715 + ... + 61728.

It is an arithmetic number, because the mean of its divisors is an integer number (112226160).

Almost surely, 2^1231226601 is an apocalyptic number.

1231226601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1231226601 is a deficient number, since it is larger than the sum of its proper divisors (564391959).

1231226601 is a wasteful number, since it uses less digits than its factorization.

1231226601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98836.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1231226601 is about 35088.8386955168. The cubic root of 1231226601 is about 1071.7973115087.

Adding to 1231226601 its reverse (1066221321), we get a palindrome (2297447922).

The spelling of 1231226601 in words is "one billion, two hundred thirty-one million, two hundred twenty-six thousand, six hundred one".