2011020100221 has 16 divisors (see below), whose sum is σ = 3097186037568. Its totient is φ = 1147105939200.

The previous prime is 2011020100189. The next prime is 2011020100261. The reversal of 2011020100221 is 1220010201102.

It is not a de Polignac number, because 2011020100221 - 2⁵ = 2011020100189 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2011020100197 and 2011020100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011020100261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1792352470 + ... + 1792353591.

It is an arithmetic number, because the mean of its divisors is an integer number (193574127348).

Almost surely, 2^{2011020100221} is an apocalyptic number.

It is an amenable number.

2011020100221 is a deficient number, since it is larger than the sum of its proper divisors (1086165937347).

2011020100221 is a wasteful number, since it uses less digits than its factorization.

2011020100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584706092.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2011020100221 its reverse (1220010201102), we get a palindrome (3231030301323).

The spelling of 2011020100221 in words is "two trillion, eleven billion, twenty million, one hundred thousand, two hundred twenty-one".