20021112102201 has 16 divisors (see below), whose sum is σ = 31083990758784. Its totient is φ = 11224774439424.

The previous prime is 20021112102193. The next prime is 20021112102223. The reversal of 20021112102201 is 10220121112002.

It is not a de Polignac number, because 20021112102201 - 2³ = 20021112102193 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20021112102281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8994209176 + ... + 8994211401.

It is an arithmetic number, because the mean of its divisors is an integer number (1942749422424).

Almost surely, 2^{20021112102201} is an apocalyptic number.

20021112102201 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20021112102201 is a deficient number, since it is larger than the sum of its proper divisors (11062878656583).

20021112102201 is a wasteful number, since it uses less digits than its factorization.

20021112102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17988420640.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021112102201 its reverse (10220121112002), we get a palindrome (30241233214203).

The spelling of 20021112102201 in words is "twenty trillion, twenty-one billion, one hundred twelve million, one hundred two thousand, two hundred one".