1121200210 has 16 divisors (see below), whose sum is σ = 2173403736. Its totient is φ = 413981568.

The previous prime is 1121200207. The next prime is 1121200231. The reversal of 1121200210 is 120021211.

It can be written as a sum of positive squares in 4 ways, for example, as 1004192721 + 117007489 = 31689^2 + 10817^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4312179 + ... + 4312438.

Almost surely, 2^1121200210 is an apocalyptic number.

1121200210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1121200210 is a deficient number, since it is larger than the sum of its proper divisors (1052203526).

1121200210 is a wasteful number, since it uses less digits than its factorization.

1121200210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8624637.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1121200210 is about 33484.3278266117. The cubic root of 1121200210 is about 1038.8696452831.

Adding to 1121200210 its reverse (120021211), we get a palindrome (1241221421).

The spelling of 1121200210 in words is "one billion, one hundred twenty-one million, two hundred thousand, two hundred ten".