11111021210002 has 12 divisors (see below), whose sum is σ = 19387598233950. Its totient is φ = 4761866232816.

The previous prime is 11111021209987. The next prime is 11111021210033. The reversal of 11111021210002 is 20001212011111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7290329403721 + 3820691806281 = 2700061^2 + 1954659^2 .

It is a super-2 number, since 2×11111021210002² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 56688883627 + ... + 56688883822.

Almost surely, 2^{11111021210002} is an apocalyptic number.

11111021210002 is a deficient number, since it is larger than the sum of its proper divisors (8276577023948).

11111021210002 is a wasteful number, since it uses less digits than its factorization.

11111021210002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113377767465 (or 113377767458 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 11111021210002 its reverse (20001212011111), we get a palindrome (31112233221113).

The spelling of 11111021210002 in words is "eleven trillion, one hundred eleven billion, twenty-one million, two hundred ten thousand, two".