212111100001100 has 36 divisors (see below), whose sum is σ = 465826642285704. Its totient is φ = 83822217828480.

The previous prime is 212111100001069. The next prime is 212111100001127. The reversal of 212111100001100 is 1100001111212.

It is a super-2 number, since 2×212111100001100² (a number of 29 digits) contains 22 as substring.

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, 12777768809 + ... + 12777785408.

Almost surely, 2^{212111100001100} is an apocalyptic number.

212111100001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212111100001100 is an abundant number, since it is smaller than the sum of its proper divisors (253715542284604).

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

212111100001100 is a wasteful number, since it uses less digits than its factorization.

212111100001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25555554314 (or 25555554307 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 212111100001100 its reverse (1100001111212), we get a palindrome (213211101112312).

The spelling of 212111100001100 in words is "two hundred twelve trillion, one hundred eleven billion, one hundred million, one thousand, one hundred".