2001100212212 has 12 divisors (see below), whose sum is σ = 3502597691460. Its totient is φ = 1000358014656.

The previous prime is 2001100212211. The next prime is 2001100212229. The reversal of 2001100212212 is 2122120011002.

It can be written as a sum of positive squares in 2 ways, for example, as 1167596946916 + 833503265296 = 1080554^2 + 912964^2 .

It is a super-2 number, since 2×2001100212212² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001100212211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47999423 + ... + 48041094.

It is an arithmetic number, because the mean of its divisors is an integer number (291883140955).

Almost surely, 2^{2001100212212} is an apocalyptic number.

It is an amenable number.

2001100212212 is a deficient number, since it is larger than the sum of its proper divisors (1501497479248).

2001100212212 is a wasteful number, since it uses less digits than its factorization.

2001100212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96045730 (or 96045728 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001100212212 its reverse (2122120011002), we get a palindrome (4123220223214).

The spelling of 2001100212212 in words is "two trillion, one billion, one hundred million, two hundred twelve thousand, two hundred twelve".