11121021022212 has 18 divisors (see below), whose sum is σ = 28111469806238. Its totient is φ = 3707007007392.

The previous prime is 11121021022187. The next prime is 11121021022229. The reversal of 11121021022212 is 21222012012111.

11121021022212 is a `hidden beast` number, since 1 + 11 + 210 + 210 + 22 + 212 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9813145168836 + 1307875853376 = 3132594^2 + 1143624^2 .

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

It is a super-3 number, since 3×11121021022212³ (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, 154458625273 + ... + 154458625344.

Almost surely, 2^{11121021022212} is an apocalyptic number.

11121021022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11121021022212 is an abundant number, since it is smaller than the sum of its proper divisors (16990448784026).

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

11121021022212 is a wasteful number, since it uses less digits than its factorization.

11121021022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308917250627 (or 308917250622 counting only the distinct ones).

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

Adding to 11121021022212 its reverse (21222012012111), we get a palindrome (32343033034323).

The spelling of 11121021022212 in words is "eleven trillion, one hundred twenty-one billion, twenty-one million, twenty-two thousand, two hundred twelve".