20021220011104 has 48 divisors (see below), whose sum is σ = 42664313161008. Its totient is φ = 9193656632832.

The previous prime is 20021220011083. The next prime is 20021220011113. The reversal of 20021220011104 is 40111002212002.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 122070162 + ... + 122234065.

It is an arithmetic number, because the mean of its divisors is an integer number (888839857521).

Almost surely, 2^{20021220011104} is an apocalyptic number.

It is an amenable number.

20021220011104 is an abundant number, since it is smaller than the sum of its proper divisors (22643093149904).

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

20021220011104 is a wasteful number, since it uses less digits than its factorization.

20021220011104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244304447 (or 244304439 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20021220011104 its reverse (40111002212002), we get a palindrome (60132222223106).

The spelling of 20021220011104 in words is "twenty trillion, twenty-one billion, two hundred twenty million, eleven thousand, one hundred four".