110221021020 has 48 divisors (see below), whose sum is σ = 336675120768. Its totient is φ = 26720247360.

The previous prime is 110221021013. The next prime is 110221021021. The reversal of 110221021020 is 20120122011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 110221020987 and 110221021005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (110221021021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83500114 + ... + 83501433.

It is an arithmetic number, because the mean of its divisors is an integer number (7014065016).

Almost surely, 2^110221021020 is an apocalyptic number.

110221021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

110221021020 is an abundant number, since it is smaller than the sum of its proper divisors (226454099748).

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

110221021020 is a wasteful number, since it uses less digits than its factorization.

110221021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167001570 (or 167001568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 110221021020 its reverse (20120122011), we get a palindrome (130341143031).

The spelling of 110221021020 in words is "one hundred ten billion, two hundred twenty-one million, twenty-one thousand, twenty".