1210001120 has 48 divisors (see below), whose sum is σ = 2865164400. Its totient is φ = 482893824.

The previous prime is 1210001119. The next prime is 1210001147. The reversal of 1210001120 is 211000121.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1210001098 and 1210001107.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63419 + ... + 80261.

It is an arithmetic number, because the mean of its divisors is an integer number (59690925).

Almost surely, 2^1210001120 is an apocalyptic number.

1210001120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210001120 is an abundant number, since it is smaller than the sum of its proper divisors (1655163280).

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

1210001120 is a wasteful number, since it uses less digits than its factorization.

1210001120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17307 (or 17299 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1210001120 is about 34785.0703607165. The cubic root of 1210001120 is about 1065.6025655474.

Adding to 1210001120 its reverse (211000121), we get a palindrome (1421001241).

Subtracting from 1210001120 its reverse (211000121), we obtain a palindrome (999000999).

It can be divided in two parts, 1210001 and 120, that added together give a palindrome (1210121).

The spelling of 1210001120 in words is "one billion, two hundred ten million, one thousand, one hundred twenty".