20103021021020 has 48 divisors (see below), whose sum is σ = 49551230205120. Its totient is φ = 6706181528064.

The previous prime is 20103021020969. The next prime is 20103021021133. The reversal of 20103021021020 is 2012012030102.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20103021020986 and 20103021021004.

It is a congruent number.

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, 1940440865 + ... + 1940451224.

It is an arithmetic number, because the mean of its divisors is an integer number (1032317295940).

Almost surely, 2^{20103021021020} is an apocalyptic number.

20103021021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20103021021020 is an abundant number, since it is smaller than the sum of its proper divisors (29448209184100).

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

20103021021020 is a wasteful number, since it uses less digits than its factorization.

20103021021020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880892142 (or 3880892140 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20103021021020 its reverse (2012012030102), we get a palindrome (22115033051122).

The spelling of 20103021021020 in words is "twenty trillion, one hundred three billion, twenty-one million, twenty-one thousand, twenty".