1111201201212 has 24 divisors (see below), whose sum is σ = 2729266108800. Its totient is φ = 350905642416.

The previous prime is 1111201201183. The next prime is 1111201201213. The reversal of 1111201201212 is 2121021021111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1111201201191 and 1111201201200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111201201213) 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 7 ways as a sum of consecutive naturals, for example, 2436844512 + ... + 2436844967.

It is an arithmetic number, because the mean of its divisors is an integer number (113719421200).

Almost surely, 2^{1111201201212} is an apocalyptic number.

1111201201212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1111201201212 is an abundant number, since it is smaller than the sum of its proper divisors (1618064907588).

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

1111201201212 is a wasteful number, since it uses less digits than its factorization.

1111201201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4873689505 (or 4873689503 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111201201212 its reverse (2121021021111), we get a palindrome (3232222222323).

The spelling of 1111201201212 in words is "one trillion, one hundred eleven billion, two hundred one million, two hundred one thousand, two hundred twelve".