20102111021120 has 28 divisors (see below), whose sum is σ = 47868151869804. Its totient is φ = 8040844408320.

The previous prime is 20102111021039. The next prime is 20102111021131. The reversal of 20102111021120 is 2112011120102.

It can be written as a sum of positive squares in 2 ways, for example, as 12801912256576 + 7300198764544 = 3577976^2 + 2701888^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20102111021095 and 20102111021104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31409548151 + ... + 31409548790.

It is an arithmetic number, because the mean of its divisors is an integer number (1709576852493).

Almost surely, 2^{20102111021120} is an apocalyptic number.

20102111021120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20102111021120 is an abundant number, since it is smaller than the sum of its proper divisors (27766040848684).

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

20102111021120 is an equidigital number, since it uses as much as digits as its factorization.

20102111021120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62819096958 (or 62819096948 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20102111021120 its reverse (2112011120102), we get a palindrome (22214122141222).

The spelling of 20102111021120 in words is "twenty trillion, one hundred two billion, one hundred eleven million, twenty-one thousand, one hundred twenty".