11221210120212 has 36 divisors (see below), whose sum is σ = 28528683548820. Its totient is φ = 3718782542592.

The previous prime is 11221210120147. The next prime is 11221210120283. The reversal of 11221210120212 is 21202101212211.

11221210120212 is a `hidden beast` number, since 1 + 1 + 221 + 210 + 1 + 20 + 212 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 7889548439556 + 3331661680656 = 2808834^2 + 1825284^2 .

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 a congruent number.

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, 900861637 + ... + 900874092.

Almost surely, 2^{11221210120212} is an apocalyptic number.

11221210120212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221210120212 is an abundant number, since it is smaller than the sum of its proper divisors (17307473428608).

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

11221210120212 is a wasteful number, since it uses less digits than its factorization.

11221210120212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801735912 (or 1801735907 counting only the distinct ones).

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

Adding to 11221210120212 its reverse (21202101212211), we get a palindrome (32423311332423).

The spelling of 11221210120212 in words is "eleven trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty thousand, two hundred twelve".