1000201212020 has 12 divisors (see below), whose sum is σ = 2100422545284. Its totient is φ = 400080484800.

The previous prime is 1000201212019. The next prime is 1000201212071. The reversal of 1000201212020 is 202121020001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 243534354064 + 756666857956 = 493492^2 + 869866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1000201211992 and 1000201212010.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25005030281 + ... + 25005030320.

It is an arithmetic number, because the mean of its divisors is an integer number (175035212107).

Almost surely, 2^{1000201212020} is an apocalyptic number.

1000201212020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000201212020 is an abundant number, since it is smaller than the sum of its proper divisors (1100221333264).

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

1000201212020 is a wasteful number, since it uses less digits than its factorization.

1000201212020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50010060610 (or 50010060608 counting only the distinct ones).

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

Adding to 1000201212020 its reverse (202121020001), we get a palindrome (1202322232021).

The spelling of 1000201212020 in words is "one trillion, two hundred one million, two hundred twelve thousand, twenty".