1187212110 has 64 divisors (see below), whose sum is σ = 3272832000. Its totient is φ = 269989632.

The previous prime is 1187212109. The next prime is 1187212111. The reversal of 1187212110 is 112127811.

1187212110 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1187212109) and next prime (1187212111).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187212111) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27586 + ... + 55994.

It is an arithmetic number, because the mean of its divisors is an integer number (51138000).

Almost surely, 2^1187212110 is an apocalyptic number.

1187212110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1187212110, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1636416000).

1187212110 is an abundant number, since it is smaller than the sum of its proper divisors (2085619890).

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

1187212110 is a wasteful number, since it uses less digits than its factorization.

1187212110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28625.

The product of its (nonzero) digits is 224, while the sum is 24.

The square root of 1187212110 is about 34455.9444798717. The cubic root of 1187212110 is about 1058.8703136209.

Adding to 1187212110 its reverse (112127811), we get a palindrome (1299339921).

The spelling of 1187212110 in words is "one billion, one hundred eighty-seven million, two hundred twelve thousand, one hundred ten".