1101381210 has 96 divisors (see below), whose sum is σ = 3044922192. Its totient is φ = 275251200.

The previous prime is 1101381191. The next prime is 1101381241. The reversal of 1101381210 is 121831011.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 954995409 + 146385801 = 30903^2 + 12099^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 391810 + ... + 394610.

Almost surely, 2^1101381210 is an apocalyptic number.

1101381210 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 1101381210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1522461096).

1101381210 is an abundant number, since it is smaller than the sum of its proper divisors (1943540982).

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

1101381210 is a wasteful number, since it uses less digits than its factorization.

1101381210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3088 (or 3085 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

The square root of 1101381210 is about 33187.0638954397. The cubic root of 1101381210 is about 1032.7119940229.

The spelling of 1101381210 in words is "one billion, one hundred one million, three hundred eighty-one thousand, two hundred ten".