2112101400 has 96 divisors (see below), whose sum is σ = 6554826000. Its totient is φ = 562598400.

The previous prime is 2112101399. The next prime is 2112101441. The reversal of 2112101400 is 41012112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

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, 827326 + ... + 829874.

Almost surely, 2^2112101400 is an apocalyptic number.

2112101400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2112101400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3277413000).

2112101400 is an abundant number, since it is smaller than the sum of its proper divisors (4442724600).

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

2112101400 is a wasteful number, since it uses less digits than its factorization.

2112101400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3949 (or 3940 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2112101400 is about 45957.6043762074. The cubic root of 2112101400 is about 1283.0342647493.

Adding to 2112101400 its reverse (41012112), we get a palindrome (2153113512).

The spelling of 2112101400 in words is "two billion, one hundred twelve million, one hundred one thousand, four hundred".