20110100221221 has 8 divisors (see below), whose sum is σ = 26825583313440. Its totient is φ = 13400675304912.

The previous prime is 20110100221201. The next prime is 20110100221261. The reversal of 20110100221221 is 12212200101102.

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

It is not a de Polignac number, because 20110100221221 - 2⁶ = 20110100221157 is a prime.

It is a super-2 number, since 2×20110100221221² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20110100221221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110100221201) 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, 1514536231 + ... + 1514549508.

It is an arithmetic number, because the mean of its divisors is an integer number (3353197914180).

Almost surely, 2^{20110100221221} is an apocalyptic number.

It is an amenable number.

20110100221221 is a deficient number, since it is larger than the sum of its proper divisors (6715483092219).

20110100221221 is a wasteful number, since it uses less digits than its factorization.

20110100221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029087955.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20110100221221 its reverse (12212200101102), we get a palindrome (32322300322323).

The spelling of 20110100221221 in words is "twenty trillion, one hundred ten billion, one hundred million, two hundred twenty-one thousand, two hundred twenty-one".