10001111321212 has 36 divisors (see below), whose sum is σ = 19901043003240. Its totient is φ = 4389202454560.

The previous prime is 10001111321191. The next prime is 10001111321287. The reversal of 10001111321212 is 21212311110001.

It is a happy number.

It is a super-2 number, since 2×10001111321212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 356252398 + ... + 356280469.

It is an arithmetic number, because the mean of its divisors is an integer number (552806750090).

Almost surely, 2^{10001111321212} is an apocalyptic number.

It is an amenable number.

10001111321212 is a deficient number, since it is larger than the sum of its proper divisors (9899931682028).

10001111321212 is a wasteful number, since it uses less digits than its factorization.

10001111321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712532922 (or 712532909 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 10001111321212 its reverse (21212311110001), we get a palindrome (31213422431213).

The spelling of 10001111321212 in words is "ten trillion, one billion, one hundred eleven million, three hundred twenty-one thousand, two hundred twelve".