1213100233009 has 16 divisors (see below), whose sum is σ = 1407656332288. Its totient is φ = 1023870581712.

The previous prime is 1213100232979. The next prime is 1213100233027. The reversal of 1213100233009 is 9003320013121.

It is a cyclic number.

It is not a de Polignac number, because 1213100233009 - 2⁹ = 1213100232497 is a prime.

It is a super-2 number, since 2×1213100233009² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213100230009) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 657214 + ... + 1690600.

It is an arithmetic number, because the mean of its divisors is an integer number (87978520768).

Almost surely, 2^{1213100233009} is an apocalyptic number.

It is an amenable number.

1213100233009 is a deficient number, since it is larger than the sum of its proper divisors (194556099279).

1213100233009 is a wasteful number, since it uses less digits than its factorization.

1213100233009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035964.

The product of its (nonzero) digits is 972, while the sum is 25.

The spelling of 1213100233009 in words is "one trillion, two hundred thirteen billion, one hundred million, two hundred thirty-three thousand, nine".