120001102020 has 48 divisors (see below), whose sum is σ = 373336763520. Its totient is φ = 32000293728.

The previous prime is 120001101937. The next prime is 120001102031. The reversal of 120001102020 is 20201100021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 120001101993 and 120001102011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111111592 + ... + 111112671.

It is an arithmetic number, because the mean of its divisors is an integer number (7777849240).

Almost surely, 2^120001102020 is an apocalyptic number.

120001102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120001102020 is an abundant number, since it is smaller than the sum of its proper divisors (253335661500).

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

120001102020 is a wasteful number, since it uses less digits than its factorization.

120001102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222224281 (or 222224273 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 120001102020 its reverse (20201100021), we get a palindrome (140202202041).

The spelling of 120001102020 in words is "one hundred twenty billion, one million, one hundred two thousand, twenty".