20001101211212 has 24 divisors (see below), whose sum is σ = 38427130192080. Its totient is φ = 9033502570560.

The previous prime is 20001101211209. The next prime is 20001101211233. The reversal of 20001101211212 is 21211210110002.

It is a super-2 number, since 2×20001101211212² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1447669787 + ... + 1447683602.

It is an arithmetic number, because the mean of its divisors is an integer number (1601130424670).

Almost surely, 2^{20001101211212} is an apocalyptic number.

20001101211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20001101211212 is a deficient number, since it is larger than the sum of its proper divisors (18426028980868).

20001101211212 is a wasteful number, since it uses less digits than its factorization.

20001101211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895353561 (or 2895353559 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20001101211212 its reverse (21211210110002), we get a palindrome (41212311321214).

The spelling of 20001101211212 in words is "twenty trillion, one billion, one hundred one million, two hundred eleven thousand, two hundred twelve".