2201211020 has 24 divisors (see below), whose sum is σ = 4646016144. Its totient is φ = 876013376.

The previous prime is 2201211011. The next prime is 2201211029. The reversal of 2201211020 is 201121022.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2201211011) and next prime (2201211029).

It is a junction number, because it is equal to n+sod(n) for n = 2201210992 and 2201211010.

It is not an unprimeable number, because it can be changed into a prime (2201211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 275402 + ... + 283281.

It is an arithmetic number, because the mean of its divisors is an integer number (193584006).

Almost surely, 2^2201211020 is an apocalyptic number.

2201211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201211020 is an abundant number, since it is smaller than the sum of its proper divisors (2444805124).

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

2201211020 is a wasteful number, since it uses less digits than its factorization.

2201211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558889 (or 558887 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2201211020 is about 46917.0653387443. The cubic root of 2201211020 is about 1300.8300458425.

Adding to 2201211020 its reverse (201121022), we get a palindrome (2402332042).

The spelling of 2201211020 in words is "two billion, two hundred one million, two hundred eleven thousand, twenty".