1021202020000 has 240 divisors, whose sum is σ = 2553517612800. Its totient is φ = 401829120000.

The previous prime is 1021202019979. The next prime is 1021202020019. The reversal of 1021202020000 is 202021201.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 375578641 + ... + 375581359.

It is an arithmetic number, because the mean of its divisors is an integer number (10639656720).

Almost surely, 2^{1021202020000} is an apocalyptic number.

1021202020000 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 1021202020000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276758806400).

1021202020000 is an abundant number, since it is smaller than the sum of its proper divisors (1532315592800).

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

1021202020000 is an equidigital number, since it uses as much as digits as its factorization.

1021202020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3049 (or 3026 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1021202020000 its reverse (202021201), we get a palindrome (1021404041201).

The spelling of 1021202020000 in words is "one trillion, twenty-one billion, two hundred two million, twenty thousand".