21122110002 has 32 divisors (see below), whose sum is σ = 48757129344. Its totient is φ = 5975136000.

The previous prime is 21122110001. The next prime is 21122110013. The reversal of 21122110002 is 20001122112.

It is a super-3 number, since 3×21122110002³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 21122110002.

It is not an unprimeable number, because it can be changed into a prime (21122110001) 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 15 ways as a sum of consecutive naturals, for example, 2485399 + ... + 2493882.

It is an arithmetic number, because the mean of its divisors is an integer number (1523660292).

Almost surely, 2^21122110002 is an apocalyptic number.

21122110002 is an abundant number, since it is smaller than the sum of its proper divisors (27635019342).

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

21122110002 is a wasteful number, since it uses less digits than its factorization.

21122110002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979394.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21122110002 its reverse (20001122112), we get a palindrome (41123232114).

The spelling of 21122110002 in words is "twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two".