20110221111020 has 48 divisors (see below), whose sum is σ = 43689020306400. Its totient is φ = 7766475225600.

The previous prime is 20110221111011. The next prime is 20110221111077. The reversal of 20110221111020 is 2011112201102.

20110221111020 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×20110221111020² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110221110986 and 20110221111004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19697120 + ... + 20692920.

It is an arithmetic number, because the mean of its divisors is an integer number (910187923050).

Almost surely, 2^{20110221111020} is an apocalyptic number.

20110221111020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110221111020 is an abundant number, since it is smaller than the sum of its proper divisors (23578799195380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20110221111020 is a wasteful number, since it uses less digits than its factorization.

20110221111020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030658 (or 1030656 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20110221111020 its reverse (2011112201102), we get a palindrome (22121333312122).

The spelling of 20110221111020 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, one hundred eleven thousand, twenty".