2111021211204 has 36 divisors (see below), whose sum is σ = 5336312166640. Its totient is φ = 703657957680.

The previous prime is 2111021211199. The next prime is 2111021211227. The reversal of 2111021211204 is 4021121201112.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1029519 + ... + 2298249.

Almost surely, 2^{2111021211204} is an apocalyptic number.

It is an amenable number.

2111021211204 is an abundant number, since it is smaller than the sum of its proper divisors (3225290955436).

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

2111021211204 is a wasteful number, since it uses less digits than its factorization.

2111021211204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314960 (or 1314955 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 2111021211204 its reverse (4021121201112), we get a palindrome (6132142412316).

The spelling of 2111021211204 in words is "two trillion, one hundred eleven billion, twenty-one million, two hundred eleven thousand, two hundred four".