2189110131900 has 216 divisors, whose sum is σ = 7055223506240. Its totient is φ = 567330117120.

The previous prime is 2189110131869. The next prime is 2189110131919. The reversal of 2189110131900 is 91310119812.

It is a super-2 number, since 2×2189110131900² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 29166621 + ... + 29241579.

Almost surely, 2^{2189110131900} is an apocalyptic number.

2189110131900 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 2189110131900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3527611753120).

2189110131900 is an abundant number, since it is smaller than the sum of its proper divisors (4866113374340).

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

2189110131900 is a wasteful number, since it uses less digits than its factorization.

2189110131900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75893 (or 75883 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 36.

The spelling of 2189110131900 in words is "two trillion, one hundred eighty-nine billion, one hundred ten million, one hundred thirty-one thousand, nine hundred".