1021202220201 has 4 divisors (see below), whose sum is σ = 1361602960272. Its totient is φ = 680801480132.

The previous prime is 1021202220197. The next prime is 1021202220209. The reversal of 1021202220201 is 1020222021201.

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 1021202220201 - 2² = 1021202220197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021202220209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170200370031 + ... + 170200370036.

It is an arithmetic number, because the mean of its divisors is an integer number (340400740068).

Almost surely, 2^{1021202220201} is an apocalyptic number.

It is an amenable number.

1021202220201 is a deficient number, since it is larger than the sum of its proper divisors (340400740071).

1021202220201 is an equidigital number, since it uses as much as digits as its factorization.

1021202220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340400740070.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1021202220201 its reverse (1020222021201), we get a palindrome (2041424241402).

The spelling of 1021202220201 in words is "one trillion, twenty-one billion, two hundred two million, two hundred twenty thousand, two hundred one".