2111121111204 has 72 divisors (see below), whose sum is σ = 6158005992320. Its totient is φ = 597321361152.

The previous prime is 2111121111193. The next prime is 2111121111259. The reversal of 2111121111204 is 4021111211112.

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 23 ways as a sum of consecutive naturals, for example, 40641349 + ... + 40693260.

Almost surely, 2^{2111121111204} is an apocalyptic number.

It is an amenable number.

2111121111204 is an abundant number, since it is smaller than the sum of its proper divisors (4046884881116).

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

2111121111204 is a wasteful number, since it uses less digits than its factorization.

2111121111204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81334729 (or 81334724 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 2111121111204 its reverse (4021111211112), we get a palindrome (6132232322316).

The spelling of 2111121111204 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, one hundred eleven thousand, two hundred four".