20102200221021 has 8 divisors (see below), whose sum is σ = 27053428335264. Its totient is φ = 13276219460400.

The previous prime is 20102200220981. The next prime is 20102200221023. The reversal of 20102200221021 is 12012200220102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20102200221021 - 2¹¹ = 20102200218973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102200221023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31311838030 + ... + 31311838671.

It is an arithmetic number, because the mean of its divisors is an integer number (3381678541908).

Almost surely, 2^{20102200221021} is an apocalyptic number.

It is an amenable number.

20102200221021 is a deficient number, since it is larger than the sum of its proper divisors (6951228114243).

20102200221021 is a wasteful number, since it uses less digits than its factorization.

20102200221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62623676811.

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

Adding to 20102200221021 its reverse (12012200220102), we get a palindrome (32114400441123).

The spelling of 20102200221021 in words is "twenty trillion, one hundred two billion, two hundred million, two hundred twenty-one thousand, twenty-one".