1012120120 has 64 divisors (see below), whose sum is σ = 2615068800. Its totient is φ = 348670080.

The previous prime is 1012120103. The next prime is 1012120121. The reversal of 1012120120 is 210212101.

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 = 1012120097 and 1012120106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012120121) 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, 52174 + ... + 68893.

It is an arithmetic number, because the mean of its divisors is an integer number (40860450).

Almost surely, 2^1012120120 is an apocalyptic number.

1012120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012120120 is an abundant number, since it is smaller than the sum of its proper divisors (1602948680).

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

1012120120 is a wasteful number, since it uses less digits than its factorization.

1012120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121108 (or 121104 counting only the distinct ones).

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

The square root of 1012120120 is about 31813.8353550778. The cubic root of 1012120120 is about 1004.0238270986.

Adding to 1012120120 its reverse (210212101), we get a palindrome (1222332221).

The spelling of 1012120120 in words is "one billion, twelve million, one hundred twenty thousand, one hundred twenty".