1201102200 has 144 divisors (see below), whose sum is σ = 4100202600. Its totient is φ = 315014400.

The previous prime is 1201102183. The next prime is 1201102219. The reversal of 1201102200 is 22011021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 104331 + ... + 115269.

Almost surely, 2^1201102200 is an apocalyptic number.

1201102200 is a gapful number since it is divisible by the number (10) 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 1201102200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2050101300).

1201102200 is an abundant number, since it is smaller than the sum of its proper divisors (2899100400).

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

1201102200 is a wasteful number, since it uses less digits than its factorization.

1201102200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11022 (or 11010 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1201102200 is about 34656.9213866437. The cubic root of 1201102200 is about 1062.9838202538.

Adding to 1201102200 its reverse (22011021), we get a palindrome (1223113221).

The spelling of 1201102200 in words is "one billion, two hundred one million, one hundred two thousand, two hundred".