18111001002212 has 6 divisors (see below), whose sum is σ = 31694251753878. Its totient is φ = 9055500501104.

The previous prime is 18111001002109. The next prime is 18111001002331. The reversal of 18111001002212 is 21220010011181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18107612132416 + 3388869796 = 4255304^2 + 58214^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2263875125273 + ... + 2263875125280.

It is an arithmetic number, because the mean of its divisors is an integer number (5282375292313).

Almost surely, 2^{18111001002212} is an apocalyptic number.

It is an amenable number.

18111001002212 is a deficient number, since it is larger than the sum of its proper divisors (13583250751666).

18111001002212 is a wasteful number, since it uses less digits than its factorization.

18111001002212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4527750250557 (or 4527750250555 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 18111001002212 its reverse (21220010011181), we get a palindrome (39331011013393).

The spelling of 18111001002212 in words is "eighteen trillion, one hundred eleven billion, one million, two thousand, two hundred twelve".