2111001222204 has 126 divisors (see below), whose sum is σ = 6443145994824. Its totient is φ = 603143165520.

The previous prime is 2111001222203. The next prime is 2111001222229. The reversal of 2111001222204 is 4022221001112.

It is a tau number, because it is divible by the number of its divisors (126).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111001222203) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 7244232 + ... + 7529999.

It is an arithmetic number, because the mean of its divisors is an integer number (51136079324).

Almost surely, 2^{2111001222204} is an apocalyptic number.

It is an amenable number.

2111001222204 is an abundant number, since it is smaller than the sum of its proper divisors (4332144772620).

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

2111001222204 is a wasteful number, since it uses less digits than its factorization.

2111001222204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14774267 (or 14774243 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2111001222204 its reverse (4022221001112), we get a palindrome (6133222223316).

The spelling of 2111001222204 in words is "two trillion, one hundred eleven billion, one million, two hundred twenty-two thousand, two hundred four".