11011121021212 has 48 divisors (see below), whose sum is σ = 20769037178400. Its totient is φ = 5077818328320.

The previous prime is 11011121021203. The next prime is 11011121021249. The reversal of 11011121021212 is 21212012111011.

It is a super-2 number, since 2×11011121021212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 490047114 + ... + 490069582.

It is an arithmetic number, because the mean of its divisors is an integer number (432688274550).

Almost surely, 2^{11011121021212} is an apocalyptic number.

It is an amenable number.

11011121021212 is a deficient number, since it is larger than the sum of its proper divisors (9757916157188).

11011121021212 is a wasteful number, since it uses less digits than its factorization.

11011121021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29926 (or 29924 counting only the distinct ones).

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

Adding to 11011121021212 its reverse (21212012111011), we get a palindrome (32223133132223).

The spelling of 11011121021212 in words is "eleven trillion, eleven billion, one hundred twenty-one million, twenty-one thousand, two hundred twelve".