201122222021001 has 12 divisors (see below), whose sum is σ = 301269501299312. Its totient is φ = 134081481347172.

The previous prime is 201122222020999. The next prime is 201122222021009. The reversal of 201122222021001 is 100120222221102.

It is a happy number.

201122222021001 is a `hidden beast` number, since 2 + 0 + 11 + 222 + 220 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 201122222021001 - 2¹ = 201122222020999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201122222021009) 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, 413831732311 + ... + 413831732796.

Almost surely, 2^{201122222021001} is an apocalyptic number.

It is an amenable number.

201122222021001 is a deficient number, since it is larger than the sum of its proper divisors (100147279278311).

201122222021001 is an frugal number, since it uses more digits than its factorization.

201122222021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827663465122 (or 827663465110 counting only the distinct ones).

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

Adding to 201122222021001 its reverse (100120222221102), we get a palindrome (301242444242103).

The spelling of 201122222021001 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-one thousand, one".