1213131110001 has 8 divisors (see below), whose sum is σ = 1617514272864. Its totient is φ = 808751010240.

The previous prime is 1213131109979. The next prime is 1213131110021. The reversal of 1213131110001 is 1000111313121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1213131110001 - 2³¹ = 1210983626353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1213131110021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421150 + ... + 1613576.

It is an arithmetic number, because the mean of its divisors is an integer number (202189284108).

Almost surely, 2^{1213131110001} is an apocalyptic number.

It is an amenable number.

1213131110001 is a deficient number, since it is larger than the sum of its proper divisors (404383162863).

1213131110001 is a wasteful number, since it uses less digits than its factorization.

1213131110001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531551.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 1213131110001 its reverse (1000111313121), we get a palindrome (2213242423122).

The spelling of 1213131110001 in words is "one trillion, two hundred thirteen billion, one hundred thirty-one million, one hundred ten thousand, one".