20211022122201 has 12 divisors (see below), whose sum is σ = 29193740507412. Its totient is φ = 13473995415936.

The previous prime is 20211022122197. The next prime is 20211022122209. The reversal of 20211022122201 is 10222122011202.

It is a happy number.

20211022122201 is a `hidden beast` number, since 20 + 211 + 0 + 2 + 212 + 220 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 18806142926025 + 1404879196176 = 4336605^2 + 1185276^2 .

It is not a de Polignac number, because 20211022122201 - 2² = 20211022122197 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20211022122209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8075725 + ... + 10278101.

It is an arithmetic number, because the mean of its divisors is an integer number (2432811708951).

Almost surely, 2^{20211022122201} is an apocalyptic number.

It is an amenable number.

20211022122201 is a deficient number, since it is larger than the sum of its proper divisors (8982718385211).

20211022122201 is a wasteful number, since it uses less digits than its factorization.

20211022122201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3222040 (or 3222037 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20211022122201 its reverse (10222122011202), we get a palindrome (30433144133403).

The spelling of 20211022122201 in words is "twenty trillion, two hundred eleven billion, twenty-two million, one hundred twenty-two thousand, two hundred one".