1020020222201 has 4 divisors (see below), whose sum is σ = 1020181700772. Its totient is φ = 1019858743632.

The previous prime is 1020020222183. The next prime is 1020020222209. The reversal of 1020020222201 is 1022220200201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 275163193600 + 744857028601 = 524560^2 + 863051^2 .

It is a cyclic number.

It is not a de Polignac number, because 1020020222201 - 2³⁸ = 745142315257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1020020222209) 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, 80729810 + ... + 80742443.

It is an arithmetic number, because the mean of its divisors is an integer number (255045425193).

Almost surely, 2^{1020020222201} is an apocalyptic number.

It is an amenable number.

1020020222201 is a deficient number, since it is larger than the sum of its proper divisors (161478571).

1020020222201 is an equidigital number, since it uses as much as digits as its factorization.

1020020222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161478570.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 1020020222201 its reverse (1022220200201), we get a palindrome (2042240422402).

The spelling of 1020020222201 in words is "one trillion, twenty billion, twenty million, two hundred twenty-two thousand, two hundred one".