20200112101221 has 16 divisors (see below), whose sum is σ = 29271392747520. Its totient is φ = 12316793826240.

The previous prime is 20200112101177. The next prime is 20200112101229. The reversal of 20200112101221 is 12210121100202.

It is not a de Polignac number, because 20200112101221 - 2³⁰ = 20199038359397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20200112101221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200112101229) 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, 2375920485 + ... + 2375928986.

It is an arithmetic number, because the mean of its divisors is an integer number (1829462046720).

Almost surely, 2^{20200112101221} is an apocalyptic number.

It is an amenable number.

20200112101221 is a deficient number, since it is larger than the sum of its proper divisors (9071280646299).

20200112101221 is a wasteful number, since it uses less digits than its factorization.

20200112101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751849596.

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

Adding to 20200112101221 its reverse (12210121100202), we get a palindrome (32410233201423).

The spelling of 20200112101221 in words is "twenty trillion, two hundred billion, one hundred twelve million, one hundred one thousand, two hundred twenty-one".