1020022020000 has 180 divisors, whose sum is σ = 3624699888810. Its totient is φ = 272005824000.

The previous prime is 1020022019977. The next prime is 1020022020047. The reversal of 1020022020000 is 202200201.

It can be written as a sum of positive squares in 5 ways, for example, as 21037761936 + 998984258064 = 145044^2 + 999492^2 .

It is a tau number, because it is divible by the number of its divisors (180).

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

It is an unprimeable number.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 2653395 + ... + 3013394.

Almost surely, 2^{1020022020000} is an apocalyptic number.

1020022020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020022020000 is an abundant number, since it is smaller than the sum of its proper divisors (2604677868810).

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

1020022020000 is an equidigital number, since it uses as much as digits as its factorization.

1020022020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5666825 (or 5666799 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 1020022020000 its reverse (202200201), we get a palindrome (1020224220201).

The spelling of 1020022020000 in words is "one trillion, twenty billion, twenty-two million, twenty thousand".