2011122120220 has 24 divisors (see below), whose sum is σ = 4223426067504. Its totient is φ = 804435588096.

The previous prime is 2011122120211. The next prime is 2011122120233. The reversal of 2011122120220 is 220212211102.

It is a happy number.

It is a super-2 number, since 2×2011122120220² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2011122120194 and 2011122120203.

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, 464124 + ... + 2058556.

It is an arithmetic number, because the mean of its divisors is an integer number (175976086146).

Almost surely, 2^{2011122120220} is an apocalyptic number.

2011122120220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011122120220 is an abundant number, since it is smaller than the sum of its proper divisors (2212303947284).

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

2011122120220 is a wasteful number, since it uses less digits than its factorization.

2011122120220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657509 (or 1657507 counting only the distinct ones).

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

Adding to 2011122120220 its reverse (220212211102), we get a palindrome (2231334331322).

The spelling of 2011122120220 in words is "two trillion, eleven billion, one hundred twenty-two million, one hundred twenty thousand, two hundred twenty".