1020201220201 has 4 divisors (see below), whose sum is σ = 1029735811152. Its totient is φ = 1010666629252.

The previous prime is 1020201220139. The next prime is 1020201220223. The reversal of 1020201220201 is 1020221020201.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1020201220201 - 2¹⁵ = 1020201187433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020201220001) 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, 4767295315 + ... + 4767295528.

It is an arithmetic number, because the mean of its divisors is an integer number (257433952788).

Almost surely, 2^{1020201220201} is an apocalyptic number.

It is an amenable number.

1020201220201 is a deficient number, since it is larger than the sum of its proper divisors (9534590951).

1020201220201 is an equidigital number, since it uses as much as digits as its factorization.

1020201220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9534590950.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1020201220201 its reverse (1020221020201), we get a palindrome (2040422240402).

The spelling of 1020201220201 in words is "one trillion, twenty billion, two hundred one million, two hundred twenty thousand, two hundred one".