103120021020 has 48 divisors (see below), whose sum is σ = 288751629600. Its totient is φ = 27497189376.

The previous prime is 103120021009. The next prime is 103120021027. The reversal of 103120021020 is 20120021301.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 103120020987 and 103120021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103120021027) 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, 1504456 + ... + 1571504.

It is an arithmetic number, because the mean of its divisors is an integer number (6015658950).

Almost surely, 2^103120021020 is an apocalyptic number.

103120021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

103120021020 is an abundant number, since it is smaller than the sum of its proper divisors (185631608580).

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

103120021020 is a wasteful number, since it uses less digits than its factorization.

103120021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92694 (or 92692 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 103120021020 its reverse (20120021301), we get a palindrome (123240042321).

The spelling of 103120021020 in words is "one hundred three billion, one hundred twenty million, twenty-one thousand, twenty".