21122011002 has 8 divisors (see below), whose sum is σ = 42244022016. Its totient is φ = 7040670332.

The previous prime is 21122010997. The next prime is 21122011051. The reversal of 21122011002 is 20011022112.

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

21122011002 is an admirable number.

It is a super-2 number, since 2×21122011002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1760167578 + ... + 1760167589.

It is an arithmetic number, because the mean of its divisors is an integer number (5280502752).

Almost surely, 2^21122011002 is an apocalyptic number.

21122011002 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21122011002 is a wasteful number, since it uses less digits than its factorization.

21122011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3520335172.

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

Adding to 21122011002 its reverse (20011022112), we get a palindrome (41133033114).

It can be divided in two parts, 211220 and 11002, that added together give a palindrome (222222).

The spelling of 21122011002 in words is "twenty-one billion, one hundred twenty-two million, eleven thousand, two".