21112221012002 has 16 divisors (see below), whose sum is σ = 32049638275200. Its totient is φ = 10429481633472.

The previous prime is 21112221011963. The next prime is 21112221012007. The reversal of 21112221012002 is 20021012221112.

It is not an unprimeable number, because it can be changed into a prime (21112221012007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118255502 + ... + 118433897.

It is an arithmetic number, because the mean of its divisors is an integer number (2003102392200).

Almost surely, 2^{21112221012002} is an apocalyptic number.

21112221012002 is a deficient number, since it is larger than the sum of its proper divisors (10937417263198).

21112221012002 is a wasteful number, since it uses less digits than its factorization.

21112221012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236689937.

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

Adding to 21112221012002 its reverse (20021012221112), we get a palindrome (41133233233114).

The spelling of 21112221012002 in words is "twenty-one trillion, one hundred twelve billion, two hundred twenty-one million, twelve thousand, two".