1000201221020 has 12 divisors (see below), whose sum is σ = 2100422564184. Its totient is φ = 400080488400.

The previous prime is 1000201221001. The next prime is 1000201221029. The reversal of 1000201221020 is 201221020001.

It is a happy number.

1000201221020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 1000201220992 and 1000201221010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000201221029) 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, 25005030506 + ... + 25005030545.

It is an arithmetic number, because the mean of its divisors is an integer number (175035213682).

Almost surely, 2^{1000201221020} is an apocalyptic number.

1000201221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000201221020 is an abundant number, since it is smaller than the sum of its proper divisors (1100221343164).

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

1000201221020 is a wasteful number, since it uses less digits than its factorization.

1000201221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50010061060 (or 50010061058 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1000201221020 its reverse (201221020001), we get a palindrome (1201422241021).

It can be divided in two parts, 1000201 and 221020, that added together give a palindrome (1221221).

The spelling of 1000201221020 in words is "one trillion, two hundred one million, two hundred twenty-one thousand, twenty".