1201100 has 18 divisors (see below), whose sum is σ = 2606604. Its totient is φ = 480400.

The previous prime is 1201097. The next prime is 1201103. The reversal of 1201100 is 11021.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1201097) and next prime (1201103).

It is a Harshad number since it is a multiple of its sum of digits (5).

It is not an unprimeable number, because it can be changed into a prime (1201103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5906 + ... + 6105.

2^1201100 is an apocalyptic number.

1201100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201100 is an abundant number, since it is smaller than the sum of its proper divisors (1405504).

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

1201100 is a wasteful number, since it uses less digits than its factorization.

1201100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025 (or 12018 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 5.

The square root of 1201100 is about 1095.9470790143. The cubic root of 1201100 is about 106.2983171248.

Adding to 1201100 its reverse (11021), we get a palindrome (1212121).

The spelling of 1201100 in words is "one million, two hundred one thousand, one hundred".