20110221020120 has 144 divisors (see below), whose sum is σ = 57855468298320. Its totient is φ = 6268120763520.

The previous prime is 20110221020117. The next prime is 20110221020161. The reversal of 20110221020120 is 2102012201102.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20110221020095 and 20110221020104.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 42160844 + ... + 42635163.

It is an arithmetic number, because the mean of its divisors is an integer number (401774085405).

Almost surely, 2^{20110221020120} is an apocalyptic number.

20110221020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20110221020120 is an abundant number, since it is smaller than the sum of its proper divisors (37745247278200).

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

20110221020120 is a wasteful number, since it uses less digits than its factorization.

20110221020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84796054 (or 84796032 counting only the distinct ones).

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

Adding to 20110221020120 its reverse (2102012201102), we get a palindrome (22212233221222).

The spelling of 20110221020120 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, twenty thousand, one hundred twenty".