11021212212012 has 18 divisors (see below), whose sum is σ = 27859175313788. Its totient is φ = 3673737403992.

The previous prime is 11021212212007. The next prime is 11021212212067. The reversal of 11021212212012 is 21021221212011.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-3 number, since 3×11021212212012³ (a number of 40 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 153072391798 + ... + 153072391869.

Almost surely, 2^{11021212212012} is an apocalyptic number.

11021212212012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11021212212012 is an abundant number, since it is smaller than the sum of its proper divisors (16837963101776).

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

11021212212012 is a wasteful number, since it uses less digits than its factorization.

11021212212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306144783677 (or 306144783672 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11021212212012 its reverse (21021221212011), we get a palindrome (32042433424023).

It can be divided in two parts, 1102121 and 2212012, that added together give a palindrome (3314133).

The spelling of 11021212212012 in words is "eleven trillion, twenty-one billion, two hundred twelve million, two hundred twelve thousand, twelve".