21220220012002 has 8 divisors (see below), whose sum is σ = 34723996383312. Its totient is φ = 9645554550900.

The previous prime is 21220220011999. The next prime is 21220220012027. The reversal of 21220220012002 is 20021002202212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21220220012002² (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 3 ways as a sum of consecutive naturals, for example, 482277727524 + ... + 482277727567.

It is an arithmetic number, because the mean of its divisors is an integer number (4340499547914).

Almost surely, 2^{21220220012002} is an apocalyptic number.

21220220012002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21220220012002 is a deficient number, since it is larger than the sum of its proper divisors (13503776371310).

21220220012002 is a wasteful number, since it uses less digits than its factorization.

21220220012002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964555455104.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21220220012002 its reverse (20021002202212), we get a palindrome (41241222214214).

The spelling of 21220220012002 in words is "twenty-one trillion, two hundred twenty billion, two hundred twenty million, twelve thousand, two".