11221111210212 has 36 divisors (see below), whose sum is σ = 29597713629120. Its totient is φ = 3577745602992.

The previous prime is 11221111210207. The next prime is 11221111210297. The reversal of 11221111210212 is 21201211112211.

It is a happy number.

11221111210212 is a `hidden beast` number, since 11 + 221 + 1 + 11 + 210 + 212 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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 11 ways as a sum of consecutive naturals, for example, 6776032512 + ... + 6776034167.

It is an arithmetic number, because the mean of its divisors is an integer number (822158711920).

Almost surely, 2^{11221111210212} is an apocalyptic number.

11221111210212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221111210212 is an abundant number, since it is smaller than the sum of its proper divisors (18376602418908).

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

11221111210212 is a wasteful number, since it uses less digits than its factorization.

11221111210212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13552066712 (or 13552066707 counting only the distinct ones).

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

Adding to 11221111210212 its reverse (21201211112211), we get a palindrome (32422322322423).

The spelling of 11221111210212 in words is "eleven trillion, two hundred twenty-one billion, one hundred eleven million, two hundred ten thousand, two hundred twelve".