2121111111004 has 6 divisors (see below), whose sum is σ = 3711944444264. Its totient is φ = 1060555555500.

The previous prime is 2121111110983. The next prime is 2121111111011. The reversal of 2121111111004 is 4001111111212.

It is a happy number.

It is a super-3 number, since 3×2121111111004³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265138888872 + ... + 265138888879.

Almost surely, 2^{2121111111004} is an apocalyptic number.

It is an amenable number.

2121111111004 is a deficient number, since it is larger than the sum of its proper divisors (1590833333260).

2121111111004 is a wasteful number, since it uses less digits than its factorization.

2121111111004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530277777755 (or 530277777753 counting only the distinct ones).

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

Adding to 2121111111004 its reverse (4001111111212), we get a palindrome (6122222222216).

The spelling of 2121111111004 in words is "two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred eleven thousand, four".