2221100212004 has 6 divisors (see below), whose sum is σ = 3886925371014. Its totient is φ = 1110550106000.

The previous prime is 2221100211937. The next prime is 2221100212099. The reversal of 2221100212004 is 4002120011222.

It can be written as a sum of positive squares in only one way, i.e., 2032221313600 + 188878898404 = 1425560^2 + 434602^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 277637526497 + ... + 277637526504.

It is an arithmetic number, because the mean of its divisors is an integer number (647820895169).

Almost surely, 2^{2221100212004} is an apocalyptic number.

It is an amenable number.

2221100212004 is a deficient number, since it is larger than the sum of its proper divisors (1665825159010).

2221100212004 is a wasteful number, since it uses less digits than its factorization.

2221100212004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555275053005 (or 555275053003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2221100212004 its reverse (4002120011222), we get a palindrome (6223220223226).

The spelling of 2221100212004 in words is "two trillion, two hundred twenty-one billion, one hundred million, two hundred twelve thousand, four".