1232101009 has 4 divisors (see below), whose sum is σ = 1232233200. Its totient is φ = 1231968820.

The previous prime is 1232101001. The next prime is 1232101021. The reversal of 1232101009 is 9001012321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1232101009 - 2³ = 1232101001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1232101001) 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, 50959 + ... + 71140.

It is an arithmetic number, because the mean of its divisors is an integer number (308058300).

Almost surely, 2^1232101009 is an apocalyptic number.

It is an amenable number.

1232101009 is a deficient number, since it is larger than the sum of its proper divisors (132191).

1232101009 is a wasteful number, since it uses less digits than its factorization.

1232101009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132190.

The product of its (nonzero) digits is 108, while the sum is 19.

The square root of 1232101009 is about 35101.2964005605. The cubic root of 1232101009 is about 1072.0509789677.

The spelling of 1232101009 in words is "one billion, two hundred thirty-two million, one hundred one thousand, nine".