202222210020121 has 4 divisors (see below), whose sum is σ = 207154459045044. Its totient is φ = 197289960995200.

The previous prime is 202222210020073. The next prime is 202222210020169. The reversal of 202222210020121 is 121020012222202.

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

It is an interprime number because it is at equal distance from previous prime (202222210020073) and next prime (202222210020169).

It can be written as a sum of positive squares in 2 ways, for example, as 4257619560000 + 197964590460121 = 2063400^2 + 14069989^2 .

It is a cyclic number.

It is not a de Polignac number, because 202222210020121 - 2⁷ = 202222210019993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202222210020221) 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, 2466124512400 + ... + 2466124512481.

It is an arithmetic number, because the mean of its divisors is an integer number (51788614761261).

Almost surely, 2^{202222210020121} is an apocalyptic number.

It is an amenable number.

202222210020121 is a deficient number, since it is larger than the sum of its proper divisors (4932249024923).

202222210020121 is an equidigital number, since it uses as much as digits as its factorization.

202222210020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4932249024922.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202222210020121 its reverse (121020012222202), we get a palindrome (323242222242323).

The spelling of 202222210020121 in words is "two hundred two trillion, two hundred twenty-two billion, two hundred ten million, twenty thousand, one hundred twenty-one".