20100202200221 has 64 divisors (see below), whose sum is σ = 24979640474880. Its totient is φ = 15900925501440.

The previous prime is 20100202200217. The next prime is 20100202200223. The reversal of 20100202200221 is 12200220200102.

It is a cyclic number.

It is not a de Polignac number, because 20100202200221 - 2² = 20100202200217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20100202200196 and 20100202200205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20100202200223) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 535743755 + ... + 535781271.

It is an arithmetic number, because the mean of its divisors is an integer number (390306882420).

Almost surely, 2^{20100202200221} is an apocalyptic number.

It is an amenable number.

20100202200221 is a deficient number, since it is larger than the sum of its proper divisors (4879438274659).

20100202200221 is a wasteful number, since it uses less digits than its factorization.

20100202200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38526.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20100202200221 its reverse (12200220200102), we get a palindrome (32300422400323).

The spelling of 20100202200221 in words is "twenty trillion, one hundred billion, two hundred two million, two hundred thousand, two hundred twenty-one".