20112110221020 has 24 divisors (see below), whose sum is σ = 56313908619024. Its totient is φ = 5363229392256.

The previous prime is 20112110221019. The next prime is 20112110221039. The reversal of 20112110221020 is 2012201121102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 167600918449 + ... + 167600918568.

It is an arithmetic number, because the mean of its divisors is an integer number (2346412859126).

Almost surely, 2^{20112110221020} is an apocalyptic number.

20112110221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20112110221020 is an abundant number, since it is smaller than the sum of its proper divisors (36201798398004).

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

20112110221020 is a wasteful number, since it uses less digits than its factorization.

20112110221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335201837029 (or 335201837027 counting only the distinct ones).

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

Adding to 20112110221020 its reverse (2012201121102), we get a palindrome (22124311342122).

The spelling of 20112110221020 in words is "twenty trillion, one hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, twenty".