20021222112201 has 12 divisors (see below), whose sum is σ = 28964519020528. Its totient is φ = 13326723268344.

The previous prime is 20021222112169. The next prime is 20021222112211. The reversal of 20021222112201 is 10221122212002.

It is a happy number.

20021222112201 is a `hidden beast` number, since 20 + 0 + 212 + 2 + 211 + 220 + 1 = 666.

It is not a de Polignac number, because 20021222112201 - 2⁵ = 20021222112169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021222112211) 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, 1729838875 + ... + 1729850448.

Almost surely, 2^{20021222112201} is an apocalyptic number.

It is an amenable number.

20021222112201 is a deficient number, since it is larger than the sum of its proper divisors (8943296908327).

20021222112201 is a wasteful number, since it uses less digits than its factorization.

20021222112201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3459689972 (or 3459689969 counting only the distinct ones).

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

Adding to 20021222112201 its reverse (10221122212002), we get a palindrome (30242344324203).

The spelling of 20021222112201 in words is "twenty trillion, twenty-one billion, two hundred twenty-two million, one hundred twelve thousand, two hundred one".