2201105656520 has 128 divisors (see below), whose sum is σ = 5165180317440. Its totient is φ = 843541601280.

The previous prime is 2201105656501. The next prime is 2201105656531. The reversal of 2201105656520 is 256565011022.

It is a super-2 number, since 2×2201105656520² (a number of 25 digits) contains 22 as substring.

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, 24011894 + ... + 24103386.

It is an arithmetic number, because the mean of its divisors is an integer number (40352971230).

Almost surely, 2^{2201105656520} is an apocalyptic number.

2201105656520 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 2201105656520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2582590158720).

2201105656520 is an abundant number, since it is smaller than the sum of its proper divisors (2964074660920).

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

2201105656520 is a wasteful number, since it uses less digits than its factorization.

2201105656520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91815 (or 91811 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 35.

The spelling of 2201105656520 in words is "two trillion, two hundred one billion, one hundred five million, six hundred fifty-six thousand, five hundred twenty".