21112220112002 has 16 divisors (see below), whose sum is σ = 33654904399872. Its totient is φ = 9898501285440.

The previous prime is 21112220111993. The next prime is 21112220112017. The reversal of 21112220112002 is 20021102221112.

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 1145650658 + ... + 1145669085.

It is an arithmetic number, because the mean of its divisors is an integer number (2103431524992).

Almost surely, 2^{21112220112002} is an apocalyptic number.

21112220112002 is a deficient number, since it is larger than the sum of its proper divisors (12542684287870).

21112220112002 is a wasteful number, since it uses less digits than its factorization.

21112220112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291320033.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21112220112002 its reverse (20021102221112), we get a palindrome (41133322333114).

The spelling of 21112220112002 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty million, one hundred twelve thousand, two".