1001302120 has 64 divisors (see below), whose sum is σ = 2772846720. Its totient is φ = 316894464.

The previous prime is 1001302087. The next prime is 1001302121. The reversal of 1001302120 is 212031001.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001302097 and 1001302106.

It is not an unprimeable number, because it can be changed into a prime (1001302121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133902 + ... + 141181.

It is an arithmetic number, because the mean of its divisors is an integer number (43325730).

Almost surely, 2^1001302120 is an apocalyptic number.

1001302120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001302120 is an abundant number, since it is smaller than the sum of its proper divisors (1771544600).

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

1001302120 is a wasteful number, since it uses less digits than its factorization.

1001302120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275114 (or 275110 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1001302120 is about 31643.3582288606. The cubic root of 1001302120 is about 1000.4338517454.

Adding to 1001302120 its reverse (212031001), we get a palindrome (1213333121).

The spelling of 1001302120 in words is "one billion, one million, three hundred two thousand, one hundred twenty".