2154111204 has 96 divisors (see below), whose sum is σ = 5826236416. Its totient is φ = 606735360.

The previous prime is 2154111151. The next prime is 2154111241. The reversal of 2154111204 is 4021114512.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3772239 + ... + 3772809.

Almost surely, 2^2154111204 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2154111204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2913118208).

2154111204 is an abundant number, since it is smaller than the sum of its proper divisors (3672125212).

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

2154111204 is a wasteful number, since it uses less digits than its factorization.

2154111204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1145 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 2154111204 is about 46412.4035576698. The cubic root of 2154111204 is about 1291.4850201856.

Adding to 2154111204 its reverse (4021114512), we get a palindrome (6175225716).

The spelling of 2154111204 in words is "two billion, one hundred fifty-four million, one hundred eleven thousand, two hundred four".