22121100001002 has 16 divisors (see below), whose sum is σ = 44270761802400. Its totient is φ = 7368939700272.

The previous prime is 22121100000973. The next prime is 22121100001079. The reversal of 22121100001002 is 20010000112122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1190064948 + ... + 1190083535.

It is an arithmetic number, because the mean of its divisors is an integer number (2766922612650).

Almost surely, 2^{22121100001002} is an apocalyptic number.

22121100001002 is an abundant number, since it is smaller than the sum of its proper divisors (22149661801398).

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

22121100001002 is a wasteful number, since it uses less digits than its factorization.

22121100001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2380150037.

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

Adding to 22121100001002 its reverse (20010000112122), we get a palindrome (42131100113124).

The spelling of 22121100001002 in words is "twenty-two trillion, one hundred twenty-one billion, one hundred million, one thousand, two".