22120021201212 has 54 divisors (see below), whose sum is σ = 61459737523184. Its totient is φ = 6703036726320.

The previous prime is 22120021201177. The next prime is 22120021201231. The reversal of 22120021201212 is 21210212002122.

It is a happy number.

22120021201212 is a `hidden beast` number, since 221 + 20 + 0 + 212 + 0 + 1 + 212 = 666.

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 pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2539024708 + ... + 2539033419.

Almost surely, 2^{22120021201212} is an apocalyptic number.

22120021201212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22120021201212 is an abundant number, since it is smaller than the sum of its proper divisors (39339716321972).

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

22120021201212 is a wasteful number, since it uses less digits than its factorization.

22120021201212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5078058159 (or 5078058143 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 22120021201212 its reverse (21210212002122), we get a palindrome (43330233203334).

It can be divided in two parts, 221200 and 21201212, that added together give a palindrome (21422412).

The spelling of 22120021201212 in words is "twenty-two trillion, one hundred twenty billion, twenty-one million, two hundred one thousand, two hundred twelve".