1020201210001 has 8 divisors (see below), whose sum is σ = 1056119149800. Its totient is φ = 984332509440.

The previous prime is 1020201209987. The next prime is 1020201210019. The reversal of 1020201210001 is 1000121020201.

It can be written as a sum of positive squares in 4 ways, for example, as 10580179600 + 1009621030401 = 102860^2 + 1004799^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020201210001 - 2⁷ = 1020201209873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1020201210001.

It is not an unprimeable number, because it can be changed into a prime (1020201214001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12267640 + ... + 12350521.

It is an arithmetic number, because the mean of its divisors is an integer number (132014893725).

Almost surely, 2^{1020201210001} is an apocalyptic number.

It is an amenable number.

1020201210001 is a deficient number, since it is larger than the sum of its proper divisors (35917939799).

1020201210001 is a wasteful number, since it uses less digits than its factorization.

1020201210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24619619.

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

Adding to 1020201210001 its reverse (1000121020201), we get a palindrome (2020322230202).

The spelling of 1020201210001 in words is "one trillion, twenty billion, two hundred one million, two hundred ten thousand, one".