20102200101221 has 8 divisors (see below), whose sum is σ = 23177252203584. Its totient is φ = 17077975306560.

The previous prime is 20102200101161. The next prime is 20102200101233. The reversal of 20102200101221 is 12210100220102.

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

It is not a de Polignac number, because 20102200101221 - 2¹⁰ = 20102200100197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20102200101196 and 20102200101205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102200101241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12706826075 + ... + 12706827656.

It is an arithmetic number, because the mean of its divisors is an integer number (2897156525448).

Almost surely, 2^{20102200101221} is an apocalyptic number.

It is an amenable number.

20102200101221 is a deficient number, since it is larger than the sum of its proper divisors (3075052102363).

20102200101221 is a wasteful number, since it uses less digits than its factorization.

20102200101221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25413653851.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20102200101221 its reverse (12210100220102), we get a palindrome (32312300321323).

The spelling of 20102200101221 in words is "twenty trillion, one hundred two billion, two hundred million, one hundred one thousand, two hundred twenty-one".