1020220020000 has 360 divisors, whose sum is σ = 3628687398336. Its totient is φ = 271812288000.

The previous prime is 1020220019989. The next prime is 1020220020007. The reversal of 1020220020000 is 200220201.

It is a tau number, because it is divible by the number of its divisors (360).

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

It is not an unprimeable number, because it can be changed into a prime (1020220020007) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 289258237 + ... + 289261763.

Almost surely, 2^{1020220020000} is an apocalyptic number.

1020220020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020220020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814343699168).

1020220020000 is an abundant number, since it is smaller than the sum of its proper divisors (2608467378336).

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

1020220020000 is a wasteful number, since it uses less digits than its factorization.

1020220020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5170 (or 5144 counting only the distinct ones).

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

Adding to 1020220020000 its reverse (200220201), we get a palindrome (1020420240201).

The spelling of 1020220020000 in words is "one trillion, twenty billion, two hundred twenty million, twenty thousand".