2201012211220 has 48 divisors (see below), whose sum is σ = 4684550991120. Its totient is φ = 868583678976.

The previous prime is 2201012211161. The next prime is 2201012211239. The reversal of 2201012211220 is 221122101022.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 91133949456 + 2109878261764 = 301884^2 + 1452542^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2201012211194 and 2201012211203.

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, 1658667 + ... + 2674546.

It is an arithmetic number, because the mean of its divisors is an integer number (97594812315).

Almost surely, 2^{2201012211220} is an apocalyptic number.

2201012211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201012211220 is an abundant number, since it is smaller than the sum of its proper divisors (2483538779900).

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

2201012211220 is a wasteful number, since it uses less digits than its factorization.

2201012211220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4333564 (or 4333562 counting only the distinct ones).

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

Adding to 2201012211220 its reverse (221122101022), we get a palindrome (2422134312242).

The spelling of 2201012211220 in words is "two trillion, two hundred one billion, twelve million, two hundred eleven thousand, two hundred twenty".