20130122120220 has 216 divisors, whose sum is σ = 71241357502224. Its totient is φ = 4587516767232.

The previous prime is 20130122120219. The next prime is 20130122120261. The reversal of 20130122120220 is 2202122103102.

20130122120220 is a `hidden beast` number, since 2 + 0 + 1 + 301 + 22 + 120 + 220 = 666.

20130122120220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20130122120193 and 20130122120202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 413902 + ... + 6358581.

Almost surely, 2^{20130122120220} is an apocalyptic number.

20130122120220 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 20130122120220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35620678751112).

20130122120220 is an abundant number, since it is smaller than the sum of its proper divisors (51111235382004).

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

20130122120220 is a wasteful number, since it uses less digits than its factorization.

20130122120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6772849 (or 6772837 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20130122120220 its reverse (2202122103102), we get a palindrome (22332244223322).

The spelling of 20130122120220 in words is "twenty trillion, one hundred thirty billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty".