11211112012212 has 72 divisors (see below), whose sum is σ = 32477873500800. Its totient is φ = 3194252342208.

The previous prime is 11211112012187. The next prime is 11211112012301. The reversal of 11211112012212 is 21221021111211.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61871287 + ... + 62052222.

It is an arithmetic number, because the mean of its divisors is an integer number (451081576400).

Almost surely, 2^{11211112012212} is an apocalyptic number.

11211112012212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11211112012212 is an abundant number, since it is smaller than the sum of its proper divisors (21266761488588).

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

11211112012212 is a wasteful number, since it uses less digits than its factorization.

11211112012212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123923885 (or 123923880 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11211112012212 its reverse (21221021111211), we get a palindrome (32432133123423).

The spelling of 11211112012212 in words is "eleven trillion, two hundred eleven billion, one hundred twelve million, twelve thousand, two hundred twelve".