20122001200221 has 16 divisors (see below), whose sum is σ = 27006365675520. Its totient is φ = 13326436256240.

The previous prime is 20122001200219. The next prime is 20122001200253. The reversal of 20122001200221 is 12200210022102.

It is a cyclic number.

It is not a de Polignac number, because 20122001200221 - 2¹ = 20122001200219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122001200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122001200211) 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, 35236485 + ... + 35802986.

It is an arithmetic number, because the mean of its divisors is an integer number (1687897854720).

Almost surely, 2^{20122001200221} is an apocalyptic number.

It is an amenable number.

20122001200221 is a deficient number, since it is larger than the sum of its proper divisors (6884364475299).

20122001200221 is a wasteful number, since it uses less digits than its factorization.

20122001200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71040096.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20122001200221 its reverse (12200210022102), we get a palindrome (32322211222323).

The spelling of 20122001200221 in words is "twenty trillion, one hundred twenty-two billion, one million, two hundred thousand, two hundred twenty-one".