2112021210004 has 12 divisors (see below), whose sum is σ = 3696047595828. Its totient is φ = 1056007611200.

The previous prime is 2112021209939. The next prime is 2112021210037. The reversal of 2112021210004 is 4000121202112.

It can be written as a sum of positive squares in 2 ways, for example, as 623626090000 + 1488395120004 = 789700^2 + 1219998^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2112021210004.

It is a congruent number.

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, 1812414 + ... + 2740234.

It is an arithmetic number, because the mean of its divisors is an integer number (308003966319).

Almost surely, 2^{2112021210004} is an apocalyptic number.

It is an amenable number.

2112021210004 is a deficient number, since it is larger than the sum of its proper divisors (1584026385824).

2112021210004 is a wasteful number, since it uses less digits than its factorization.

2112021210004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1496906 (or 1496904 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2112021210004 its reverse (4000121202112), we get a palindrome (6112142412116).

The spelling of 2112021210004 in words is "two trillion, one hundred twelve billion, twenty-one million, two hundred ten thousand, four".