1001020211020 has 12 divisors (see below), whose sum is σ = 2102142443184. Its totient is φ = 400408084400.

The previous prime is 1001020210919. The next prime is 1001020211021. The reversal of 1001020211020 is 201120201001.

1001020211020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 1001020210988 and 1001020211006.

It is not an unprimeable number, because it can be changed into a prime (1001020211021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25025505256 + ... + 25025505295.

It is an arithmetic number, because the mean of its divisors is an integer number (175178536932).

Almost surely, 2^{1001020211020} is an apocalyptic number.

1001020211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001020211020 is an abundant number, since it is smaller than the sum of its proper divisors (1101122232164).

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

1001020211020 is a wasteful number, since it uses less digits than its factorization.

1001020211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50051010560 (or 50051010558 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1001020211020 its reverse (201120201001), we get a palindrome (1202140412021).

The spelling of 1001020211020 in words is "one trillion, one billion, twenty million, two hundred eleven thousand, twenty".