21211111220002 has 64 divisors (see below), whose sum is σ = 37123724677248. Its totient is φ = 8982538240000.

The previous prime is 21211111219967. The next prime is 21211111220069. The reversal of 21211111220002 is 20002211111212.

It is a super-2 number, since 2×21211111220002² (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 31 ways as a sum of consecutive naturals, for example, 19106778 + ... + 20186410.

It is an arithmetic number, because the mean of its divisors is an integer number (580058198082).

Almost surely, 2^{21211111220002} is an apocalyptic number.

21211111220002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21211111220002 is a deficient number, since it is larger than the sum of its proper divisors (15912613457246).

21211111220002 is a wasteful number, since it uses less digits than its factorization.

21211111220002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080195.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21211111220002 its reverse (20002211111212), we get a palindrome (41213322331214).

The spelling of 21211111220002 in words is "twenty-one trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty thousand, two".