20133301221220 has 96 divisors (see below), whose sum is σ = 46925374325760. Its totient is φ = 7194034899840.

The previous prime is 20133301221211. The next prime is 20133301221233. The reversal of 20133301221220 is 2212210333102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20133301221191 and 20133301221200.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30133617 + ... + 30794503.

It is an arithmetic number, because the mean of its divisors is an integer number (488805982560).

Almost surely, 2^{20133301221220} is an apocalyptic number.

20133301221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20133301221220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23462687162880).

20133301221220 is an abundant number, since it is smaller than the sum of its proper divisors (26792073104540).

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

20133301221220 is a wasteful number, since it uses less digits than its factorization.

20133301221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663313 (or 663311 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20133301221220 its reverse (2212210333102), we get a palindrome (22345511554322).

The spelling of 20133301221220 in words is "twenty trillion, one hundred thirty-three billion, three hundred one million, two hundred twenty-one thousand, two hundred twenty".