20002221002101 has 8 divisors (see below), whose sum is σ = 21541095686880. Its totient is φ = 18463380931632.

The previous prime is 20002221002087. The next prime is 20002221002107. The reversal of 20002221002101 is 10120012220002.

It is a happy number.

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

It is not a de Polignac number, because 20002221002101 - 2¹⁵ = 20002220969333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002221002107) 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, 7447171 + ... + 9770608.

It is an arithmetic number, because the mean of its divisors is an integer number (2692636960860).

Almost surely, 2^{20002221002101} is an apocalyptic number.

It is an amenable number.

20002221002101 is a deficient number, since it is larger than the sum of its proper divisors (1538874684779).

20002221002101 is a wasteful number, since it uses less digits than its factorization.

20002221002101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17307155.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20002221002101 its reverse (10120012220002), we get a palindrome (30122233222103).

The spelling of 20002221002101 in words is "twenty trillion, two billion, two hundred twenty-one million, two thousand, one hundred one".