11111101820002 has 16 divisors (see below), whose sum is σ = 17699409201240. Its totient is φ = 5213238202368.

The previous prime is 11111101819997. The next prime is 11111101820011. The reversal of 11111101820002 is 20002810111111.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 11109148975521 + 1952844481 = 3333039^2 + 44191^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484850727 + ... + 484873642.

Almost surely, 2^{11111101820002} is an apocalyptic number.

11111101820002 is a deficient number, since it is larger than the sum of its proper divisors (6588307381238).

11111101820002 is a wasteful number, since it uses less digits than its factorization.

11111101820002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969724725.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 11111101820002 its reverse (20002810111111), we get a palindrome (31113911931113).

The spelling of 11111101820002 in words is "eleven trillion, one hundred eleven billion, one hundred one million, eight hundred twenty thousand, two".