202122010220201 has 6 divisors (see below), whose sum is σ = 214710924351870. Its totient is φ = 190232480206976.

The previous prime is 202122010220173. The next prime is 202122010220293. The reversal of 202122010220201 is 102022010221202.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 143020048891801 + 59101961328400 = 11959099^2 + 7687780^2 .

It is not a de Polignac number, because 202122010220201 - 2²² = 202122006025897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 202122010220201.

It is not an unprimeable number, because it can be changed into a prime (202122010220101) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 349692058916 + ... + 349692059493.

It is an arithmetic number, because the mean of its divisors is an integer number (35785154058645).

Almost surely, 2^{202122010220201} is an apocalyptic number.

It is an amenable number.

202122010220201 is a deficient number, since it is larger than the sum of its proper divisors (12588914131669).

202122010220201 is an equidigital number, since it uses as much as digits as its factorization.

202122010220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699384118443 (or 699384118426 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202122010220201 its reverse (102022010221202), we get a palindrome (304144020441403).

The spelling of 202122010220201 in words is "two hundred two trillion, one hundred twenty-two billion, ten million, two hundred twenty thousand, two hundred one".