1020022020020 has 48 divisors (see below), whose sum is σ = 2164600963728. Its totient is φ = 403724697600.

The previous prime is 1020022019977. The next prime is 1020022020047. The reversal of 1020022020020 is 200202200201.

It can be written as a sum of positive squares in 8 ways, for example, as 94093108516 + 925928911504 = 306746^2 + 962252^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020022019983 and 1020022020010.

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, 982772 + ... + 1733748.

It is an arithmetic number, because the mean of its divisors is an integer number (45095853411).

Almost surely, 2^{1020022020020} is an apocalyptic number.

1020022020020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020022020020 is an abundant number, since it is smaller than the sum of its proper divisors (1144578943708).

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

1020022020020 is a wasteful number, since it uses less digits than its factorization.

1020022020020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751700 (or 751698 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 1020022020020 its reverse (200202200201), we get a palindrome (1220224220221).

The spelling of 1020022020020 in words is "one trillion, twenty billion, twenty-two million, twenty thousand, twenty".