11331212201001 has 64 divisors (see below), whose sum is σ = 20948410828800. Its totient is φ = 5880947457600.

The previous prime is 11331212200993. The next prime is 11331212201021. The reversal of 11331212201001 is 10010221213311.

11331212201001 is a `hidden beast` number, since 1 + 1 + 331 + 212 + 20 + 100 + 1 = 666.

It is not a de Polignac number, because 11331212201001 - 2³ = 11331212200993 is a prime.

It is a super-2 number, since 2×11331212201001² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11331212201021) 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 63 ways as a sum of consecutive naturals, for example, 229666 + ... + 4766043.

It is an arithmetic number, because the mean of its divisors is an integer number (327318919200).

Almost surely, 2^{11331212201001} is an apocalyptic number.

11331212201001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11331212201001 is a deficient number, since it is larger than the sum of its proper divisors (9617198627799).

11331212201001 is a wasteful number, since it uses less digits than its factorization.

11331212201001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996827 (or 4996821 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 11331212201001 its reverse (10010221213311), we get a palindrome (21341433414312).

The spelling of 11331212201001 in words is "eleven trillion, three hundred thirty-one billion, two hundred twelve million, two hundred one thousand, one".