2011133123220 has 48 divisors (see below), whose sum is σ = 6064339881600. Its totient is φ = 495048153216.

The previous prime is 2011133123213. The next prime is 2011133123257. The reversal of 2011133123220 is 223213311102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1289187120 + ... + 1289188679.

It is an arithmetic number, because the mean of its divisors is an integer number (126340414200).

Almost surely, 2^{2011133123220} is an apocalyptic number.

2011133123220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011133123220 is an abundant number, since it is smaller than the sum of its proper divisors (4053206758380).

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

2011133123220 is a wasteful number, since it uses less digits than its factorization.

2011133123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578375824 (or 2578375822 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 2011133123220 its reverse (223213311102), we get a palindrome (2234346434322).

The spelling of 2011133123220 in words is "two trillion, eleven billion, one hundred thirty-three million, one hundred twenty-three thousand, two hundred twenty".