11211111220002 has 16 divisors (see below), whose sum is σ = 23028228452352. Its totient is φ = 3636036071280.

The previous prime is 11211111219991. The next prime is 11211111220021. The reversal of 11211111220002 is 20002211111211.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 25250250274 + ... + 25250250717.

It is an arithmetic number, because the mean of its divisors is an integer number (1439264278272).

Almost surely, 2^{11211111220002} is an apocalyptic number.

11211111220002 is an abundant number, since it is smaller than the sum of its proper divisors (11817117232350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211111220002 is a wasteful number, since it uses less digits than its factorization.

11211111220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50500501033.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 11211111220002 its reverse (20002211111211), we get a palindrome (31213322331213).

The spelling of 11211111220002 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, two".