1013200120 has 32 divisors (see below), whose sum is σ = 2301015600. Its totient is φ = 401490688.

The previous prime is 1013200081. The next prime is 1013200157. The reversal of 1013200120 is 210023101.

1013200120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 = 1013200097 and 1013200106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114085 + ... + 122644.

Almost surely, 2^1013200120 is an apocalyptic number.

1013200120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1013200120 is an abundant number, since it is smaller than the sum of its proper divisors (1287815480).

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

1013200120 is a wasteful number, since it uses less digits than its factorization.

1013200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236847 (or 236843 counting only the distinct ones).

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

The square root of 1013200120 is about 31830.8045766990. The cubic root of 1013200120 is about 1004.3808203878.

Adding to 1013200120 its reverse (210023101), we get a palindrome (1223223221).

The spelling of 1013200120 in words is "one billion, thirteen million, two hundred thousand, one hundred twenty".