2101225511 has 16 divisors (see below), whose sum is σ = 2624140800. Its totient is φ = 1634549280.

The previous prime is 2101225507. The next prime is 2101225519. The reversal of 2101225511 is 1155221012.

It is not a de Polignac number, because 2101225511 - 2² = 2101225507 is a prime.

It is a super-2 number, since 2×2101225511² = 8830297296154422242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101225519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23345 + ... + 68901.

It is an arithmetic number, because the mean of its divisors is an integer number (164008800).

Almost surely, 2^2101225511 is an apocalyptic number.

2101225511 is a deficient number, since it is larger than the sum of its proper divisors (522915289).

2101225511 is a wasteful number, since it uses less digits than its factorization.

2101225511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46174.

The product of its (nonzero) digits is 200, while the sum is 20.

The square root of 2101225511 is about 45839.1264205591. The cubic root of 2101225511 is about 1280.8282219193.

Adding to 2101225511 its reverse (1155221012), we get a palindrome (3256446523).

The spelling of 2101225511 in words is "two billion, one hundred one million, two hundred twenty-five thousand, five hundred eleven".