2201001220100 has 36 divisors (see below), whose sum is σ = 4780906437300. Its totient is φ = 879527900160.

The previous prime is 2201001220049. The next prime is 2201001220123. The reversal of 2201001220100 is 10221001022.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 3064508164 + 2197936711936 = 55358^2 + 1482544^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10805945 + ... + 11007744.

Almost surely, 2^{2201001220100} is an apocalyptic number.

2201001220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2201001220100 is an abundant number, since it is smaller than the sum of its proper divisors (2579905217200).

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

2201001220100 is a wasteful number, since it uses less digits than its factorization.

2201001220100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21814712 (or 21814705 counting only the distinct ones).

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

Adding to 2201001220100 its reverse (10221001022), we get a palindrome (2211222221122).

The spelling of 2201001220100 in words is "two trillion, two hundred one billion, one million, two hundred twenty thousand, one hundred".